What economic system was destroyed because so many people died due to the plague

Plague brought an eventual end of serfdom in Western Europe. The manorial system was already in trouble, but the Black Death assured its demise throughout much of Western and Central Europe by 1500. Severe depopulation and migration of people from village to cities caused an acute shortage of agricultural laborers.

Explanation:

this means that germany had to pay the allied countries. reparations are/is essentially payment for something that they have done wrong, so after ww1, germany was forced to pay reparations so they could replenish the allied countries resources' that they had lost during the war.

answer is b.

  it is always the best policy to have good communication and good relations between individuals and, specially, between leaders of the countries. for this purpose, among others, there is a common place, the united nations, where the representants can present his and learn about the other country's policies.