Two major formative forces in the United States: the earliest one, which arose from the nomadic 'native' American hunting tribes, then Puritan immigrants and pioneer - homesteaders. The other force arose from waves of immigrants from agrarian European societies ruled for centuries by monarchs and marked by peasant uprisings.
(It can argued there's a third force in the American southwest, a confluence of Spanish culture and Mayan/Incan ones, but these are surprisingly similar in that they too were in the agrarian - monarchist - peasant model.)
The earliest force created the Do It Yourself mindset. The later one created the Looking for Mr Good King mindset.