What do you think caused the civil war?

A common explanation is that the Civil War was fought over the moral issue of slavery. ... Feeling excluded from the political system, they turned to the only alternative they believed was left to them: secession, a political decision that led directly to war.

Explanation:

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.