It will protect the poeple and our country maybe
He could've for example retreated and let communism spread which means he would not support fighting in Korea. It would've been different because you would probably have no South Korea since the North one was supported by China and without the US the south would've lost. This would probably happen if he supported an isolationist policy.
Parliament was taxing the colonists, who protested, and eventually parliament stooped taxing paper documents and passed the Declaratory Acts. The colonists were upset that they were getting taxed when they weren't even represented in parliament. Also, you might want to turn the lexile down if you don't understand. That's why newsela is cool.
In regards to agriculture, Italy imports nearly half of its agriculture, while the U.S is exporting more than half of it's agricultural products. Besides that there is a bit more government regulation on agricultural production, and generally less land for agricultural production.
C. West Berlin was controlled by the US, France and Great Britain. This was shown during the Berlin Airlift and West Berlin was seen as an island in the Red Sea which was worth defending.