To limit the amount of power. Parties are composed of people, usually people who consider their party to be the best. However with too much power in one party causes anarchy and chaos therefore allowing more segues for corruption and abuse of systems. Therefore when the system of power is abused or overused it takes funds that some governments don't have to fix the issues created.
The correct answer is : holding a rank ( any rank really) in the military (d): the president does not need to be in military.
Actually, B is also not a requirement: one must be a natural born citizen, that is a citizen on birth- but one can be born to American parents abroad. So both b and d are correct, but i am sure that the question meant d as the answer.
Well, during this period of time, manufacturing jobs started increasing because of the war! Men started leaving their lives in the United States and started storming out to war, and this led to women taking over these jobs. This is why we see the “Rosie the Riveter” posters during this period of time. Just remember, we don’t declare war up until December 8th 1941, when Pearl Harbor was attacked and President Roosevelt signed the Declaration of War.
All I really know about Karl Marx is that he didn't like capitalism. So I would have to say the invention of capitalism.