What technologies were created around 1200-1450 in america?

After the collapse of the Western Roman Empire much of Europe's knowledge was destroyed; for example, domed buildings weren't built again until .

Possible Answers:

William the Conqueror invaded the British Isles

Cortez's invasion of Mesoamerica

the unification of Germany

the Italian Renaissance

the Age of Sail

Explanation:

The first domed building to be built in Europe since the collapse of the Roman Empire was the Florence Cathedral, built by Filippo Brunelleschi during the Italian Renaissance. The Italian Renaissance was a period of rediscovery for European intellectuals, including ancient architectural techniques. The Age of Sail, in which millions of Europeans migrated to the Americas, Cortez's invasion of Mesoamerica, the unification of Germany, and William the Conquerors invasion of Britain had dramatic effects on Europeans and their knowledge of the world, but did not lead to the ability to build domed structures.

i believe the answer is c

i would go with the last one