Final answer:
Federalism is the belief that authority resides in both the national and state governments. In a federal government, states have certain powers while the national government has others.
Step-by-step explanation:
Federalism is the belief that authority resides in both the national and state governments. In a federal government, states have certain powers while the national government has others. Some recent Supreme Court rulings have limited state power and increased national power. This ongoing struggle between national power and state power is an important aspect of our government.