The industrial revolution made the world a positive some world meaning that was more resources to go around. But most of the resources were produced by the top 1% meaning that the richer got richer and the poor get poor.
I think the answer is c because they defeated Philip in 197 BC at the battle of Cynoscephalae, and then he sued for peace.
In general, this is true. The main motives for the US going into both these wars was born from "Manifest Destiny" which dictated that the US was destined to reach from coast to coast. This left very little chance of the opposition winning with a logical argument against invasion. It was a mission of conquest, not defense.
B) helped create the strong, individualistic American spirit
