The two main reasons why Spain wanted to rule Mexico as a colony were land and resources, but it should be noted that the people played a large role in the decision as well.
The answer to this is letter D.) It led groups within empires to fight for their political independence. This era sparked lots of revolutions and upheavals against empires; different countries conquered by big empires united and strove to fight for freedom.
The U.D economy being based on both domestic and war production made the U.S a superpower.
I think it's Irap. I guess so