Why does the U.S. have a dual judicial system

http://www.infoplease.com/encyclopedia/history/court-system-united-states.html

The United States has a dual judicial system because its legal system is based on the principle of federalism. Federalism is a system of government in which power is divided between a central authority (the federal government) and individual state governments. This division of power extends to the judicial branch as well.

The dual judicial system consists of federal courts and state courts. The federal courts, headed by the Supreme Court, have jurisdiction over cases involving federal law, disputes between states, and cases in which the United States is a party. State courts, on the other hand, have jurisdiction over cases involving state law, disputes between individuals or entities within a state, and cases not under federal jurisdiction.

This system allows for a balance of power between the federal government and the states. It preserves the independence of state courts and allows them to handle matters that are specific to their jurisdiction and laws. It also ensures that the federal judiciary can interpret and apply federal laws consistently throughout the country.

To understand how the dual judicial system works and the specific roles of federal and state courts, you can consult resources such as the United States Constitution, legal textbooks, or reputable online sources that provide detailed explanations and examples. Additionally, you can study the landmark Supreme Court cases that have helped shape the interpretation of federal and state laws.