My proven theory.
Our theory is that power was a large part if americas development.
Because power is such a large part of americas development it was not just the power in america that changed the way americans lived. Some influential leaders such as Mao Zedong, Harry Truman and Joseph stalin changed not only america but the world in good ways and bad. Those three leaders were important in the history of america because they were influential people. Harry truman changed america because he helped other nations align to stop the spread of communism. Mao Zedong Created the peoples republic of china which stopped the bad ways of power they once had. Joseph stalin was the leader of the soviet union from mid 1920s until his death in 1953, he was not a very good leader in the eyes of americans but he did have a large effect on the development of america.