The Americans felt that it was their destiny to expand their territory. They didn't want any other countries to take land from them. They only wanted to protect their land.
They were justified.
The correct answer is c.: it served as the be boundary between North Korea and South Korea. The current line is in a similar place, but it's not a straight line, unlike the line running along the 39th parallel.
Answer:
Approximately 40 battles.
1. Italy
2. Castelli
3. Napoleon
I hope this helped!