If you are talking about the first air pollution problem its is A, almost about 100 years ago.
1955
Answer:
It is because of the USSR and them taking over lots of country's and for example the Vietnam war and the Korean war. In both wars the communist's parties were supplied by the USSR. Another thing is that both country's kept on feeling threatened by each other.
Answer:
The main goal was to contain communion in Southeast Asia. The US failed to achieve this goal because it wasn't willing to sacrifice as much to win the war as the Vietnamese communists were.
I believe it was the Battle of Yorktown.It ended the American Revolutionary War.
