For what is Charlemagne best remembered? 1. reuniting western Europe and ruling it for almost 50 years
2.building an empire based on the ancient Roman religions and outlawing Christianity
3. establishing an empire that lasted throughout the Middle Ages
4. defeating invaders from the north who had attacked the Roman Empire

1

Explanation:

He made the kingdom of the Franks, ruling over France, Germany, Switzerland, and the low countries

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.