Decline of the byzantine empire

give two reasons and explanations

Explanation:

The Ottomans had been fighting the Byzantines for over 100 years, and in 1454, Constantinople finally fell to them and their conquest of the Byzantine Empire was complete.

The empire fell in 1453.

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the mongolian invasion of china and central asia resulted in a disruption of the silk road as the chinese garrisons lost support from the chinese kingdoms which fell under the mongols. however, as the mongols established a formal dynasty in china, the successors of genghis khan restored the garrisons along the silk road allowing the safe travel caravans again.

in november 1781, john hanson became the first president of the united states in congress assembled, under the articles of confederation. many people have argued that john hanson, and not george washington, was the first president of the united states, but this is not quite true.

explanation: