Section: Social Complexity

Subsection: Transport infrastructure

Bridge

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
131	(Egypt - Dynasty 0)	Full Year Range of Egypt - Dynasty 0 is assumed. [-3300, -3100]	absent	None
132	(Ptolemaic Kingdom I)	Full Year Range of Ptolemaic Kingdom I is assumed. [-305, -217]	present	None
133	(Ptolemaic Kingdom II)	Full Year Range of Ptolemaic Kingdom II is assumed. [-217, -30]	present	None
134	(Egypt - Tulunid-Ikhshidid Period)	Full Year Range of Egypt - Tulunid-Ikhshidid Period is assumed. [868, 969]	present	None
135	(Beaker Culture)	Full Year Range of Beaker Culture is assumed. [-3200, -2000]	unknown	None
136	(French Kingdom - Early Bourbon)	Full Year Range of French Kingdom - Early Bourbon is assumed. [1589, 1660]	unknown	None
137	(Carolingian Empire I)	Full Year Range of Carolingian Empire I is assumed. [752, 840]	unknown	None
138	(Durrani Empire)	Full Year Range of Durrani Empire is assumed. [1747, 1826]	absent	None
139	(Hallstatt A-B1)	Full Year Range of Hallstatt A-B1 is assumed. [-1000, -900]	unknown	None
140	(Norman England)	Full Year Range of Norman England is assumed. [1066, 1153]	present

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