Acid rain consists of sulfur and carbon dioxide. Acid rain can affect all living thing even non-living thing. It can kill many animals and plants. Many stone buildings can dissolve and it can corrode many metal structure.
The USA became involved in Vietnam because it feared the spread of communism. The USA were unable to defeat the Vietcong and were met with growing opposition to the war back home.
this is the only one I can answer, I'm sorry. I hope this helps though
