How did the supreme court being established define the us as a nation?

The Supreme Court is the final judge in all cases involving laws of Congress, and the highest law of all — the Constitution. The Supreme Court is like a referee on a football field. The Congress, the President, the state police, and other government officials are the players. Some can pass laws, and others can enforce laws. But all exercise power within certain boundaries. These boundaries are set by the Constitution. As the "referee" in the U.S. system of government, it is the Supreme Court's job to say when government officials step out-of-bounds. It basically confirms everything.

where is the picture of the graph or table?

the answer is that the political parties encourage people to caste vote.