Answer:
The spread of communism
Explanation:
America fought in the Vietnam war because we wanted to stop the spread of communism before it started another word war. We tried to stop it, however it was a pointless war for us to be in. So we withdrew troops and left, allowing communism to spread. This was a huge loss for America.
I believe that the subject was the American colonies
The answer is b) flat plains. Egypt is a desert where as Mesopotamia is flat mud plains, so they are not similar there.
