Answer:Civil wars. Probably the most important single cause of Byzantium's collapse was its recurrent debilitating civil wars. Three of the worst periods of civil war and internal infighting took place during Byzantium's decline.
Explanation:
He has it because he didn’t know what he was doing
The United States's recession was for only seven months and eventually lead to the Great Depression in 1929. On the other hand, Germany was much harder due to their debts that are needed to be paid and that was because of the Treaty of Versailles that obliged the Germany to pay the Allied Powers its debt.