America is more religious than Europe and the major religion is Protestant Christian. In Europe, the main religion is Catholic Christian :)
1836 is when the independence was one
Marbury v. Madison (1803) was a Supreme Court case that settled the principle of judicial review in the United States, determining that American courts hold the authority to strike down laws, statutes, and some government actions that contradict the U.S. Constitution.
This decision established that the U.S. Constitution is an actual law, not merely a declaration of political principles, and helped set the boundary separating the executive and judicial branches of government.