1. Gold rush and mining opportunities (silver in Nevada)
2. The opportunity to work in the cattle industry; to be a “cowboy”
3. Faster travel to the West by railroad; availability of supplies due to the railroad.
4. The opportunity to own land cheaply under the Homestead Act.
The Treaty of Versailles said that Germany was the sole cause of WWl and that it had to pay for all of the reparations. Obviously, Germany was in no position to pay for all of the damage done during the war and went into a deep economic depression in the 1920's. In comes Hitler and the Nazi Party. Hitler said if Germans would vote for him and make him the supreme chancellor, he would pull Germany out of the depression and make Germany great again. He said if the men would join the military, in return for building highways he would pay them and they could provide for their families. And that folks, is how Germany became ruled by Nazis.
The U.S did not join the League of Nations following WWI. Even the the President of the United States at that time, Woodrow Wilson, was enthusiastic about the organization, they didn't officially join it. The reason why they didn't join it was because of isolationists in congress, in other words, people that didn't agree with what other people are interested in. Because of the war and all of the fatal deaths of Americans, people didn't want the U.S to be affiliated with Europe in any way.
I think it caused a big revolt of rebellion and riots
It increased the demand for coal and iron. we need the iron to build things and the coal to power things. Remember coal is what powered the steam engine.