What are the three levels of the judiciary? And, what is the name of the highest court in the United States?

Three main level of court system in united states are

1) District courts which also called as trial court

2) circuit court is a court which known for first appeal

3) Supreme court is a court which known for final appeal

Explanation:

Three main level of court system in united states are

1) District courts which also called as trial court

2) circuit court is a court which known for first appeal

3) Supreme court is a court which known for final appeal

Supreme court is known as the highest court in united state and it has the power to listen all appeal that come before it under federal law.