Section: Social Complexity

Subsection: Specialized Buildings

Irrigation System

irrigation systems are polity owned (which includes owned by the community, or the state), no Descriptions IN Codebook (See here)

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Variable	Definition
Polity	The Seshat Polity ID
Year(s)	The years for which we have the data. [negative = BCE]
Tag	[Evidenced, Disputed, Suspected, Inferred, Unknown]
Verified	A Seshat Expert has approved this piece of data.

Variable	Definition
irrigation_system	The absence or presence of irrigation system for a polity.

Actual Data:

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#	Polity	Year(s)	Irrigation System	Description	Edit
111	(Kanem)	Full Year Range of Kanem is assumed. [800, 1379]	unknown	None
112	(French Kingdom - Late Valois)	Full Year Range of French Kingdom - Late Valois is assumed. [1450, 1589]	present	None
113	(Oyo)	Full Year Range of Oyo is assumed. [1300, 1535]	unknown	None
114	(Avar Khaganate)	Full Year Range of Avar Khaganate is assumed. [586, 822]	unknown	None
115	(Early United Mexican States)	Full Year Range of Early United Mexican States is assumed. [1810, 1920]	present	None
116	(Us Reconstruction-Progressive)	Full Year Range of Us Reconstruction-Progressive is assumed. [1866, 1933]	present	None
117	(Late Tiwanaku)	Full Year Range of Late Tiwanaku is assumed. [800, 1149]	present	None
118	(Chaco Canyon - Late Bonito phase)	Full Year Range of Chaco Canyon - Late Bonito phase is assumed. [1101, 1140]	present	None
119	(Antebellum US)	Full Year Range of Antebellum US is assumed. [1776, 1865]	present	None
120	(Monagrillo)	Full Year Range of Monagrillo is assumed. [-3000, -1300]	absent	'In some parts of the world [agricultural risk-minimization] was accomplished through infrastructure such as dams and large-scale irrigation canals [...] but there is no evidence for such features among the regions of Central Panama.' [Berrey 2015, p. 207]

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