The United States has been, so far, successful because of agreement. Without it we fail. Its really that simple. Our success is because we found middle ground. Extremes, on other side, are the danger and will eventually take us down and either side can do that - if they can.
Uh huh...when the white man came we agreed to take all the land from the Indians, then we agreed to have a revolution, a few years later we agreed to have another war with our former government. We agreed that it was okay to own slaves and we agreed that only white men could vote. Before long we agreed to have a civil war.
Yep just a long string of agreements and seeking the middle ground.
It's made us the successful nation we are today...always remember that behind every successful man is a string of sick and hungry children.