The chart above shows the process by which cases can be appealed to higher courts in the United States. This chart primarily illustrates which Constitutional principle?

Select one:
A. Supremacy of the federal government
B. Separation of powers
C. Government by the people
D. Checks and balances

A. Supremacy of the federal government

Explanation:

The vast majority of the Supreme Court of the United States' cases are appeals that have already gone through an initial trial at a lower level. Cases are only heard for the first time at the Supreme Court level if they are concerning disputes between states or high-ranking federal officials.

The correct answer is: Supremacy of the federal government