The u. s. military used planes to spray this leaf-killing toxic chemical which devastated the landscape of vietnam.

This chemical is known as "Agent Orange." Essentially, this was a powerful herbicide used by the US government used to destroy Vietnamese crops and any other forestry that was covering up their hideouts. This herbicide destroyed the Vietnamese environment. It was later found that this substance also had an adverse effect on the Vietnamese citizens. Millions of individuals developed health problems as a result of the US using this herbicide.