There is a balance of power that shifts based on what the American people want, and based on our ever changing needs. This encourages change. It can have the problem of becoming gridlocked though, where congressional representatives from both parties will refuse to work together based on disagreements.
Answer:
English scientist; he invented the dynamo—a machine that generated electricity. His invention eventually led to today's electrical generators. Which then led to telephones because telephones needed electricity to function
7 billion people in the world
