Egypt was a long, skinny civilization nestled along the Tigris River
O True
O False

the name of the theory is landmass theory.

the federal constitution of the united mexican states of 1824 was enacted on october 4 of 1824, after the overthrow of the mexican empire of agustin de iturbide. in the new constitution, the republic took the name of of united mexican states. it was replaced by the federal constitution of the united mexican states in 1857.