Which of the following are the powers kept by the states under the federal system of government in the United States?

The powers kept by the states under the federal system of government in the United States include:

1. Education: States have the authority to regulate and oversee their own education systems. This includes setting curriculum, standards, and funding for schools.

2. Law enforcement: States have the power to maintain their own police forces, enforce laws, and administer justice within their jurisdictions.

3. Health and social welfare: States have the ability to regulate and provide healthcare services, as well as determine social welfare policies such as welfare programs and assistance.

4. Infrastructure: States have control over their own infrastructure projects, such as building and maintaining roads, bridges, and highways within their borders.

5. Elections: States can establish their own election laws, including determining the process for voter registration, setting requirements for candidates, and conducting elections.

6. Commerce and business regulation: States have the power to regulate business activities within their jurisdiction, such as licensing and regulating professions, setting minimum wage laws, and enforcing consumer protection laws.

7. Land use and zoning: States can establish laws and regulations regarding land use and zoning within their territories, including determining acceptable uses of land and promoting environmental conservation.

8. Public safety: States have the authority to regulate public safety measures, such as issuing driver's licenses, registering firearms, and implementing emergency management plans.

It's worth noting that the specific powers of the states are not explicitly enumerated in the United States Constitution, but they are derived from the Tenth Amendment, which states that "powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people."