Which event proved to be the end of the Federalists party? 1.)The split of the democratic-republican party.

2.)The election of Thomas Jefferson to presidency.

3..) The continued war with the native Americans.

4.)the War of 1812

4, the War of 1812.

Explanation:

The Federalist Party came to an end with the War of 1812 due to the Hartford Convention.

the conditions that made the byzantine empire vulnerable to attacks by the muslin turks were the sack of constantinople by western crusaders, the conquests of the sultanate of rum, presence of rival kingdoms and finally the set up of fiefdoms at the empire which were owned by the ghazis (turkish warriors).