In what way did world war I represent a turning point in modern world history

The answer is A, '' The destruction caused by the war led countries to isolate themselves from the world ". When WW2 broke out countries wanted to stay apart from other countries because They were afraid that the other country would join the war and bring destruction to their country.

Just think, why was it effective? -it appeled to critics because it was written well, that made it noticeable to the public including the white population-it was also recognizable to the african americans because it was about their heritage.-it was powerful just keep finding more points and elaborate on them. message me if you need more