Which statement describes an impact of the collapse of the western roman empire on europe?

europe's economy improved significantly as new roads and infrastructure were developed.
former roman lands were split up and claimed by germanic kingdoms.
there was a definite decline in christianity, its followers, and its spread across lands.
trade increased in the west, resulting in an end to the recession taking place at that time.

disease was the number one killer of native peoples. they had had little exposure to the diseases of europe. this led to some villages being almost completely wiped out and some tribes destroyed.

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.