The U.S. relies so heavily on oil that if it disappeared then they would probably be dragged down unless they found a better solution.
The U.S needs oil because, it runs cars, and also many other things. It runs boats for trade, airplanes, runs electricity creation plants, and it also creates our roads.
Your last one
the aztec gov was made up...loyal to their kings
Socialist movement really helped to further the women's suffrage movement. Socialists really challenged the "accepted" ideas that women were some how inferior. The basic doctrine of socialism and the ideas of people being equal really backs the ideas that women should be able to vote. They should be able to vote because they are the same as men. They should also have a say in the running of the government.