| 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. |
| # | Polity | Year(s) | Irrigation System | Description | Edit |
|---|---|---|---|---|---|
| 31 |
(Khadga Dynasty) |
Full Year Range of Khadga Dynasty is assumed. [650, 700] |
present |
“In the delta, embanked fields irrigated by monsoon rainwater and worked by ploughs appeared at least 2,500 years ago.Since then this form of crop production has been expanding gradually across the lowlands at the expense of an older system of hoe cultivation on temporary plots.” [van_Schendel 2009] | |
| 32 |
(Southern Qi State) |
Full Year Range of Southern Qi State is assumed. [479, 502] |
present |
EMPTY_COMMENT | |
| 34 |
(Chu Kingdom - Spring and Autumn Period) |
Full Year Range of Chu Kingdom - Spring and Autumn Period is assumed. [-740, -489] |
present |
Developed in Yellow River basin after Shang. [McEvedy_Jones 1978, p. 172] | |