Final answer:
The primary roles of the federal government in order of importance are federalism and national defense, economic regulation and social welfare, and ensuring civil rights and liberties.
Step-by-step explanation:
- Federalism and national defense: The federal government is responsible for maintaining the nation's security and protecting its citizens. It has the authority to declare war, maintain a military, and establish foreign policy.
- Economic regulation and social welfare: The federal government plays a significant role in regulating the economy and promoting social welfare. It provides benefits such as Social Security, Medicare, and Medicaid, and regulates industries to ensure fair competition and consumer protection.
- Ensuring civil rights and liberties: The federal government has a crucial role in protecting and enforcing civil rights and liberties for all citizens. It enforces laws against discrimination, ensures equal protection under the law, and upholds the Constitution.