A viewset for viewing and editing Steels.

GET /api/wf/steels/?format=api&page=8
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{
    "count": 375,
    "next": null,
    "previous": "https://seshat-db.com/api/wf/steels/?format=api&page=7",
    "results": [
        {
            "id": 351,
            "polity": {
                "id": 24,
                "name": "us_woodland_3",
                "long_name": "Cahokia - Late Woodland I",
                "start_year": 300,
                "end_year": 450
            },
            "year_from": null,
            "year_to": null,
            "tag": "TRS",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Steel",
            "steel": "absent",
            "comment": null,
            "description": null
        },
        {
            "id": 352,
            "polity": {
                "id": 28,
                "name": "us_cahokia_3",
                "long_name": "Cahokia - Sand Prairie",
                "start_year": 1275,
                "end_year": 1400
            },
            "year_from": null,
            "year_to": null,
            "tag": "TRS",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Steel",
            "steel": "absent",
            "comment": null,
            "description": null
        },
        {
            "id": 353,
            "polity": {
                "id": 27,
                "name": "us_emergent_mississippian_1",
                "long_name": "Cahokia - Emergent Mississippian I",
                "start_year": 750,
                "end_year": 900
            },
            "year_from": null,
            "year_to": null,
            "tag": "TRS",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Steel",
            "steel": "absent",
            "comment": null,
            "description": null
        },
        {
            "id": 354,
            "polity": {
                "id": 29,
                "name": "us_oneota",
                "long_name": "Oneota",
                "start_year": 1400,
                "end_year": 1650
            },
            "year_from": null,
            "year_to": null,
            "tag": "TRS",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Steel",
            "steel": "absent",
            "comment": null,
            "description": " Not mentioned by sources; it seems most Oneota technology derived from wood and stone§REF§Illinois State Museum, Late Prehistoric, Technology: Weapons (2000), <a class=\"external free\" href=\"http://www.museum.state.il.us/muslink/nat_amer/pre/htmls/lp_weapons.html\" rel=\"nofollow\">http://www.museum.state.il.us/muslink/nat_amer/pre/htmls/lp_weapons.html</a>§REF§."
        },
        {
            "id": 355,
            "polity": {
                "id": 296,
                "name": "uz_chagatai_khanate",
                "long_name": "Chagatai Khanate",
                "start_year": 1227,
                "end_year": 1402
            },
            "year_from": null,
            "year_to": null,
            "tag": "TRS",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Steel",
            "steel": "present",
            "comment": null,
            "description": " Steel bosses on shields.§REF§(Robinson 1967) Robinson, H. Russell. 1967. Oriental Armour. Walker and Co. New York.§REF§"
        },
        {
            "id": 356,
            "polity": {
                "id": 469,
                "name": "uz_janid_dyn",
                "long_name": "Khanate of Bukhara",
                "start_year": 1599,
                "end_year": 1747
            },
            "year_from": null,
            "year_to": null,
            "tag": "IFR",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Steel",
            "steel": "present",
            "comment": null,
            "description": " Present in previous polities."
        },
        {
            "id": 357,
            "polity": {
                "id": 465,
                "name": "uz_khwarasm_1",
                "long_name": "Ancient Khwarazm",
                "start_year": -1000,
                "end_year": -521
            },
            "year_from": null,
            "year_to": null,
            "tag": "SSP",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Steel",
            "steel": "unknown",
            "comment": null,
            "description": null
        },
        {
            "id": 358,
            "polity": {
                "id": 464,
                "name": "uz_koktepe_1",
                "long_name": "Koktepe I",
                "start_year": -1400,
                "end_year": -1000
            },
            "year_from": null,
            "year_to": null,
            "tag": "SSP",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Steel",
            "steel": "unknown",
            "comment": null,
            "description": null
        },
        {
            "id": 359,
            "polity": {
                "id": 466,
                "name": "uz_koktepe_2",
                "long_name": "Koktepe II",
                "start_year": -750,
                "end_year": -550
            },
            "year_from": null,
            "year_to": null,
            "tag": "TRS",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Steel",
            "steel": "absent",
            "comment": null,
            "description": null
        },
        {
            "id": 360,
            "polity": {
                "id": 287,
                "name": "uz_samanid_emp",
                "long_name": "Samanid Empire",
                "start_year": 819,
                "end_year": 999
            },
            "year_from": null,
            "year_to": null,
            "tag": "TRS",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Steel",
            "steel": "present",
            "comment": null,
            "description": " <i>Reference for high quality of the steel (no beginning date provided):</i> “In the context of this work, it is important to note that crucible steel of fine quality was made at Herat, in Bukhara and in northern India.”§REF§(Hill 2000, 270) D R Hill. Physics and mechanics. Civil and hydraulic engineering. Industrial processes and manufacturing, and craft activities.  C E Bosworth. M S Asimov. eds. 2000. History of Civilizations of Central Asia. Volume IV. The age of achievement: A.D. 750 to the end of the fifteenth century. UNESCO. Paris.§REF§ <i>Reference for high quality of the steel (this one dates from 900 CE):</i> \"Further east from Merv along the Silk Road is a region praised for its iron and steel production by Greek, Islamic, and Chinese writers. The Sogdian state of Ustrushana, a mountainous region east of Samarkand, and the Ferghana basin ... material related to the medieval iron and steel industry has been uncovered here. Most relevant ... is a workshop excavated at a city-site of the +9th-13th centuries in Feghana, at Eski Achsy, Uzbekistan. ..” Crucible fragments ”The excavators consider that the process used here was direct production of steel from ore, just as He Tangkun argues for the Luoyang crucibles. It is quite possible, however, that they were (also) used in co-fusion steel production as suggested by the Merv excavators.\"§REF§(Wagner and Needham 2008, 265) Donald B Wagner. Joseph Needham. 2008. Science and Civilisation in China. Volume V. Chemistry and Chemical Technology. Cambridge University Press. Cambridge.§REF§ <i>Fine steel swords may have been produced at an earlier time than 900 CE with the technology coming from northern India or from this region via Persia:</i> In Tibet c700 CE \"steel swords were certainly available through trade with Sogdia and Fergana ... and many steel blades are known from Central Asia from the late first millennium until the arrival of Genghis Khan in the early thirteenth century.\"§REF§(Clarke 2006, 22) John Clarke. A History of Ironworking in Tibet: Centers of Production, Styles, and Techniques. Donald J LaRocca. ed. 2006. Warriors of the Himalayas: Rediscovering the Arms and Armor of Tibet. Yale University Press. New Haven.§REF§ \"The Sogdian cities of Samarqand and Bukhara probably also manufactured iron and steel weapons that were exported to Tibet. We know that by the early eighth century, the Sogdians, having probably borrowed the technology from the Sasanians, were manufacturing mail armor and offered suits of the material as gifts to the Tang court in 718. ... The Sasasnians may themselves have developed knowledge of steelmaking from contacts with northern India.\"§REF§(Clarke 2006, 21) John Clarke. A History of Ironworking in Tibet: Centers of Production, Styles, and Techniques. Donald J LaRocca. ed. 2006. Warriors of the Himalayas: Rediscovering the Arms and Armor of Tibet. Yale University Press. New Haven.§REF§ \"The principal centres for the manufacture of steel weapons in Central Asia were Khwarazm, Ferghana and northern India.”§REF§(Hill 2000, 270) D R Hill. Physics and mechanics. Civil and hydraulic engineering. Industrial processes and manufacturing, and craft activities.  C E Bosworth. M S Asimov. eds. 2000. History of Civilizations of Central Asia. Volume IV. The age of achievement: A.D. 750 to the end of the fifteenth century. UNESCO. Paris.§REF§ Steel swords produced by Iranians from Indian wootz ingots.§REF§(Khorasani) Khorasani, Manouchehr Moshtagh. Terminology of Arms and Armor used in the Shahname: a Comparative Analysis \"Swords and Maces\"§REF§"
        },
        {
            "id": 361,
            "polity": {
                "id": 468,
                "name": "uz_sogdiana_city_states",
                "long_name": "Sogdiana - City-States Period",
                "start_year": 604,
                "end_year": 711
            },
            "year_from": null,
            "year_to": null,
            "tag": "IFR",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Steel",
            "steel": "present",
            "comment": null,
            "description": " <i>Reference for high quality of the steel (no beginning date provided):</i> “In the context of this work, it is important to note that crucible steel of fine quality was made at Herat, in Bukhara and in northern India.”§REF§(Hill 2000, 270) D R Hill. Physics and mechanics. Civil and hydraulic engineering. Industrial processes and manufacturing, and craft activities.  C E Bosworth. M S Asimov. eds. 2000. History of Civilizations of Central Asia. Volume IV. The age of achievement: A.D. 750 to the end of the fifteenth century. UNESCO. Paris.§REF§ <i>Reference for high quality of the steel (this one dates from 900 CE):</i> \"Further east from Merv along the Silk Road is a region praised for its iron and steel production by Greek, Islamic, and Chinese writers. The Sogdian state of Ustrushana, a mountainous region east of Samarkand, and the Ferghana basin ... material related to the medieval iron and steel industry has been uncovered here. Most relevant ... is a workshop excavated at a city-site of the +9th-13th centuries in Feghana, at Eski Achsy, Uzbekistan. ..” Crucible fragments ”The excavators consider that the process used here was direct production of steel from ore, just as He Tangkun argues for the Luoyang crucibles. It is quite possible, however, that they were (also) used in co-fusion steel production as suggested by the Merv excavators.\"§REF§(Wagner and Needham 2008, 265) Donald B Wagner. Joseph Needham. 2008. Science and Civilisation in China. Volume V. Chemistry and Chemical Technology. Cambridge University Press. Cambridge.§REF§ <i>Fine steel swords may have been produced at an earlier time than 900 CE with the technology coming from northern India or from this region via Persia:</i> In Tibet c700 CE \"steel swords were certainly available through trade with Sogdia and Fergana ... and many steel blades are known from Central Asia from the late first millennium until the arrival of Genghis Khan in the early thirteenth century.\"§REF§(Clarke 2006, 22) John Clarke. A History of Ironworking in Tibet: Centers of Production, Styles, and Techniques. Donald J LaRocca. ed. 2006. Warriors of the Himalayas: Rediscovering the Arms and Armor of Tibet. Yale University Press. New Haven.§REF§ \"The Sogdian cities of Samarqand and Bukhara probably also manufactured iron and steel weapons that were exported to Tibet. We know that by the early eighth century, the Sogdians, having probably borrowed the technology from the Sasanians, were manufacturing mail armor and offered suits of the material as gifts to the Tang court in 718. ... The Sasasnians may themselves have developed knowledge of steelmaking from contacts with northern India.\"§REF§(Clarke 2006, 21) John Clarke. A History of Ironworking in Tibet: Centers of Production, Styles, and Techniques. Donald J LaRocca. ed. 2006. Warriors of the Himalayas: Rediscovering the Arms and Armor of Tibet. Yale University Press. New Haven.§REF§ \"The principal centres for the manufacture of steel weapons in Central Asia were Khwarazm, Ferghana and northern India.”§REF§(Hill 2000, 270) D R Hill. Physics and mechanics. Civil and hydraulic engineering. Industrial processes and manufacturing, and craft activities.  C E Bosworth. M S Asimov. eds. 2000. History of Civilizations of Central Asia. Volume IV. The age of achievement: A.D. 750 to the end of the fifteenth century. UNESCO. Paris.§REF§ \"High-carbon steel was being produced in the eastern Iranian region from the tenth century CE.\"§REF§(Goody 2012, 171) Goody, Jack. 2012. Metals, Culture and Capitalism: An Essay on the Origins of the Modern World. Cambridge: Cambridge University Press.§REF§<br>"
        },
        {
            "id": 362,
            "polity": {
                "id": 370,
                "name": "uz_timurid_emp",
                "long_name": "Timurid Empire",
                "start_year": 1370,
                "end_year": 1526
            },
            "year_from": null,
            "year_to": null,
            "tag": "TRS",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Steel",
            "steel": "present",
            "comment": null,
            "description": " Steel bosses on shields.§REF§(Robinson 1967) Robinson, H. Russell. 1967. Oriental Armour. Walker and Co. New York.§REF§"
        },
        {
            "id": 363,
            "polity": {
                "id": 353,
                "name": "ye_himyar_1",
                "long_name": "Himyar I",
                "start_year": 270,
                "end_year": 340
            },
            "year_from": null,
            "year_to": null,
            "tag": "TRS",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Steel",
            "steel": "present",
            "comment": null,
            "description": " Al-Kindi commented on the the high quality steel of the ancient Yemeni sword.\"§REF§(Syvanne 2015, 134) Ilkka Syvanne. 2015. Military History of Late Rome 284-361. Pen and Sword. Barnsley.§REF§ Likely iron/steel was imported from Sri Lanka and/or India. There is no evidence for an iron-smelting site in Yemen §REF§(Killick 2015) Killick, David. Cairo to Cape: The Spread of Metallurgy through Eastern and Southern Africa. Roberts, Benjamin W. Thornton, Christopher P. 2015. eds. Archaeometallurgy in Global Perspective: Methods and Syntheses. Springer. New York.§REF§ The area, like East Africa, could have received iron imports from Sri Lanka toward the end of the first century BCE and was, in any case, conquered by iron-using Axum §REF§(Carlson 2012, 119) Jon D Carlson. 2012. Myths, State Expansion, and the Birth of Globalization: A Comparative Perspective. Palgrave Macmillan. Basingstoke.§REF§ by 200 CE. Historical records show \"good quality Indian steel\" was reaching Ethiopia in 200 BCE. §REF§(Biggs et al. 2013 citing Tripathi and Upadhyay 2009, p. 123) Lynn Biggs. Berenice Bellina. Marcos Martinon-Torres. Thomas Oliver Pryce. January 2013. Prehistoric iron production technologies in the Upper Thai-Malay Peninsula: metallography and slag inclusion analyses of ironartefacts from Khao Sam Kaeo and Phu Khao Thong. Archaeological and Anthropological Sciences. Springer.§REF§"
        },
        {
            "id": 364,
            "polity": {
                "id": 354,
                "name": "ye_himyar_2",
                "long_name": "Himyar II",
                "start_year": 378,
                "end_year": 525
            },
            "year_from": null,
            "year_to": null,
            "tag": "TRS",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Steel",
            "steel": "present",
            "comment": null,
            "description": " Al-Kindi commented on the the high quality steel of the ancient Yemeni sword.\"§REF§(Syvanne 2015, 134) Ilkka Syvanne. 2015. Military History of Late Rome 284-361. Pen and Sword. Barnsley.§REF§ Likely iron/steel was imported from Sri Lanka and/or India. There is no evidence for an iron-smelting site in Yemen §REF§(Killick 2015) Killick, David. Cairo to Cape: The Spread of Metallurgy through Eastern and Southern Africa. Roberts, Benjamin W. Thornton, Christopher P. 2015. eds. Archaeometallurgy in Global Perspective: Methods and Syntheses. Springer. New York.§REF§ The area, like East Africa, could have received iron imports from Sri Lanka toward the end of the first century BCE and was, in any case, conquered by iron-using Axum §REF§(Carlson 2012, 119) Jon D Carlson. 2012. Myths, State Expansion, and the Birth of Globalization: A Comparative Perspective. Palgrave Macmillan. Basingstoke.§REF§ by 200 CE. Historical records show \"good quality Indian steel\" was reaching Ethiopia in 200 BCE. §REF§(Biggs et al. 2013 citing Tripathi and Upadhyay 2009, p. 123) Lynn Biggs. Berenice Bellina. Marcos Martinon-Torres. Thomas Oliver Pryce. January 2013. Prehistoric iron production technologies in the Upper Thai-Malay Peninsula: metallography and slag inclusion analyses of ironartefacts from Khao Sam Kaeo and Phu Khao Thong. Archaeological and Anthropological Sciences. Springer.§REF§"
        },
        {
            "id": 365,
            "polity": {
                "id": 537,
                "name": "ye_yemen_lba",
                "long_name": "Yemen - Late Bronze Age",
                "start_year": -1200,
                "end_year": -801
            },
            "year_from": null,
            "year_to": null,
            "tag": "TRS",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Steel",
            "steel": "absent",
            "comment": null,
            "description": null
        },
        {
            "id": 366,
            "polity": {
                "id": 536,
                "name": "ye_yemen_lnl",
                "long_name": "Neolithic Yemen",
                "start_year": -3500,
                "end_year": -1201
            },
            "year_from": null,
            "year_to": null,
            "tag": "TRS",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Steel",
            "steel": "absent",
            "comment": null,
            "description": " \"No archaeological evidence when metallurgy was first practiced in Yemen, but first bronze items appeared in the 3rd-2nd mill graves. Probably bronze (raw material, not items) was imported from Omani mountains.\"§REF§(A. Sedov: pers. comm. to E. Cioni: September 2019)§REF§"
        },
        {
            "id": 367,
            "polity": {
                "id": 541,
                "name": "ye_qasimid_dyn",
                "long_name": "Yemen - Qasimid Dynasty",
                "start_year": 1637,
                "end_year": 1805
            },
            "year_from": null,
            "year_to": null,
            "tag": "TRS",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Steel",
            "steel": "present",
            "comment": null,
            "description": " Rifles were present: 'But al-jirafi goes on, more importantly, to relate that al-Ahmar wrote al-Mansur al-Husayn a brusque letter demanding a meeting. The Imam feared an attempt at assassination; so he'assassinated alAhmar first, stuck his head on a lance, and galloped off with it through a hail of bullets from the shaykh's enraged tribesmen (aljirafi 1951: 182). In fact, al-Ahrnar, accompanied by Bin juzaylan of DhU Muhammad and by Ahmad Muhammad Hubaysh of Sufyan, seems to have come to 'Asir, just outside San'a', to seek a settlement (Zabarah 1941: 539 and 1958: 486). The details are probably lost forever, and we are told only that al-Ahmar 'had wished to make independent his own rule of part of the country' (ibid.), which he very well may have done; but al-Mansur alHusayn's view of the matter, as recorded in the histories, has all the vigorous clarity of the Zaydi tradition. The taunt to the tribesmen at the time was, typically, that they were no better than polytheists: he brandished al-Ahmar's head on his spear and cried 'this is the head of your idol'.' §REF§Dresch, Paul 1989. \"Tribes, Government and History in Yemen\", 203p§REF§"
        },
        {
            "id": 368,
            "polity": {
                "id": 368,
                "name": "ye_rasulid_dyn",
                "long_name": "Rasulid Dynasty",
                "start_year": 1229,
                "end_year": 1453
            },
            "year_from": null,
            "year_to": null,
            "tag": "IFR",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Steel",
            "steel": "present",
            "comment": null,
            "description": " Code inferred from Ayyubid Sultanate§REF§Nicolle, D. 2011. Saladin. Osprey Publishing.§REF§ which occupied Yemen between 1175-1128 CE."
        },
        {
            "id": 369,
            "polity": {
                "id": 540,
                "name": "ye_saba_k",
                "long_name": "Kingdom of Saba and Dhu Raydan",
                "start_year": -110,
                "end_year": 149
            },
            "year_from": null,
            "year_to": null,
            "tag": "IFR",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Steel",
            "steel": "present",
            "comment": null,
            "description": " Likely iron/steel was imported from Sri Lanka and/or India. There is no evidence for an iron-smelting site in Yemen §REF§(Killick 2015) Killick, David. Cairo to Cape: The Spread of Metallurgy through Eastern and Southern Africa. Roberts, Benjamin W. Thornton, Christopher P. 2015. eds. Archaeometallurgy in Global Perspective: Methods and Syntheses. Springer. New York.§REF§ The area, like East Africa, could have received iron imports from Sri Lanka toward the end of the first century BCE and was, in any case, conquered by iron-using Axum §REF§(Carlson 2012, 119) Jon D Carlson. 2012. Myths, State Expansion, and the Birth of Globalization: A Comparative Perspective. Palgrave Macmillan. Basingstoke.§REF§ by 200 CE. Historical records show \"good quality Indian steel\" was reaching Ethiopia in 200 BCE. §REF§(Biggs et al. 2013 citing Tripathi and Upadhyay 2009, p. 123) Lynn Biggs. Berenice Bellina. Marcos Martinon-Torres. Thomas Oliver Pryce. January 2013. Prehistoric iron production technologies in the Upper Thai-Malay Peninsula: metallography and slag inclusion analyses of ironartefacts from Khao Sam Kaeo and Phu Khao Thong. Archaeological and Anthropological Sciences. Springer.§REF§"
        },
        {
            "id": 370,
            "polity": {
                "id": 372,
                "name": "ye_tahirid_dyn",
                "long_name": "Yemen - Tahirid Dynasty",
                "start_year": 1454,
                "end_year": 1517
            },
            "year_from": null,
            "year_to": null,
            "tag": "IFR",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Steel",
            "steel": "present",
            "comment": null,
            "description": " Code inferred from Ayyubid Sultanate§REF§Nicolle, D. 2011. Saladin. Osprey Publishing.§REF§ which occupied Yemen between 1175-1128 CE."
        },
        {
            "id": 371,
            "polity": {
                "id": 365,
                "name": "ye_warlords",
                "long_name": "Yemen - Era of Warlords",
                "start_year": 1038,
                "end_year": 1174
            },
            "year_from": null,
            "year_to": null,
            "tag": "IFR",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Steel",
            "steel": "present",
            "comment": null,
            "description": " Code inferred from Abbasid Caliphate§REF§Hugh N Kennedy. 2001. The Armies of the Caliphs: Military and Society in the Early Islamic State. Routledge. Seshat URL: <a class=\"external free\" href=\"https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/SGPPFNAZ/q/kennedy\" rel=\"nofollow\">https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/SGPPFNAZ/q/kennedy</a>§REF§ which occupied Yemen between 751-868 CE."
        },
        {
            "id": 372,
            "polity": {
                "id": 359,
                "name": "ye_ziyad_dyn",
                "long_name": "Yemen Ziyadid Dynasty",
                "start_year": 822,
                "end_year": 1037
            },
            "year_from": null,
            "year_to": null,
            "tag": "IFR",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Steel",
            "steel": "present",
            "comment": null,
            "description": " Code inferred from Abbasid Caliphate§REF§Hugh N Kennedy. 2001. The Armies of the Caliphs: Military and Society in the Early Islamic State. Routledge. Seshat URL: <a class=\"external free\" href=\"https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/SGPPFNAZ/q/kennedy\" rel=\"nofollow\">https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/SGPPFNAZ/q/kennedy</a>§REF§ which occupied Yemen between 751-868 CE."
        },
        {
            "id": 373,
            "polity": {
                "id": 64,
                "name": "gr_crete_post_palace_1",
                "long_name": "Postpalatial Crete",
                "start_year": -1300,
                "end_year": -1200
            },
            "year_from": null,
            "year_to": null,
            "tag": "TRS",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Steel",
            "steel": "absent",
            "comment": null,
            "description": ""
        },
        {
            "id": 374,
            "polity": {
                "id": 61,
                "name": "gr_crete_old_palace",
                "long_name": "Old Palace Crete",
                "start_year": -1900,
                "end_year": -1700
            },
            "year_from": null,
            "year_to": null,
            "tag": "TRS",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Steel",
            "steel": "absent",
            "comment": null,
            "description": ""
        },
        {
            "id": 375,
            "polity": {
                "id": 62,
                "name": "gr_crete_new_palace",
                "long_name": "New Palace Crete",
                "start_year": -1700,
                "end_year": -1450
            },
            "year_from": null,
            "year_to": null,
            "tag": "TRS",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Steel",
            "steel": "absent",
            "comment": null,
            "description": ""
        }
    ]
}