Section: Social Complexity

Subsection: Transport infrastructure

Bridge

Talking about transport infrastructure, bridges refers to bridges built and/or maintained by the polity (that is, code 'present' even if the polity did not build a bridge, but devotes resources to maintaining it). (See here)

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Metadata:

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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
bridge	The absence or presence of bridge for a polity.

Actual Data:

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#	Polity	Year(s)	Bridge	Description	Edit
81	(Formative Period)	Full Year Range of Formative Period is assumed. [-7200, -7000]	unknown	None
82	(Susiana B)	Full Year Range of Susiana B is assumed. [-5700, -5100]	unknown	None
83	(Susiana - Late Ubaid)	Full Year Range of Susiana - Late Ubaid is assumed. [-4700, -4300]	unknown	None
84	(Susiana - Early Ubaid)	Full Year Range of Susiana - Early Ubaid is assumed. [-5100, -4700]	unknown	None
85	(Elam - Kidinuid Period)	Full Year Range of Elam - Kidinuid Period is assumed. [-1500, -1400]	unknown	None
86	(Pre-Ceramic Period)	Full Year Range of Pre-Ceramic Period is assumed. [-7800, -7200]	unknown	None
87	(Seleucids)	Full Year Range of Seleucids is assumed. [-312, -63]	unknown	None
88	(Susa I)	Full Year Range of Susa I is assumed. [-4300, -3800]	unknown	None
89	(Papal States - Medieval Period I)	Full Year Range of Papal States - Medieval Period I is assumed. [1527, 1648]	present	None
90	(Kushan Empire)	Full Year Range of Kushan Empire is assumed. [35, 319]	unknown	None

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