A slave is a person that belongs to another one and is treated as property. Serfs, I'm not so sure about this now, were renting the land out from the landowners.
He was an activist you can say, he urged for the colonies to win independence because he thought it would be common sense
Douglas MacArthur decided to land a task force at Incheon, South Korea, to cut off the North Korean supply line and to, not only isolate the North Korean forces in the south, but also to push into North Korea. It was brilliantly successful, and without the intervention of Chinese troops and Soviet military equipment, North Korea would have lost the war.
hope this helps
Is this all the information the question gave you?