Answer:
Invasions from Barbarian tribes, The rising of Constantinople, Overexpansion, Government Corruption and Instability, Economic Troubles, Slave reliance for money, and Christainity rising.
Sorry, but may you add the whole question :(
The cause of unemployment in many countries is competition in the labor market. There are few employment opportunities. It leads to a situation where every available opportunity, there are more than one qualified individual. The effect is that it causes social and economic effects. The poverty index among the unemployed is high since some people do not have a source of income.
Hope this helps. :)
A test subject i think but idk