which of the following are powers that are exercised by both the national government and state government at the same time?

It is important to note that powers exercised by both the national government and state government simultaneously, often referred to as concurrent powers, may vary depending on the country. However, in the context of the United States, some examples of concurrent powers include:

1. Taxation: Both the federal government and state governments have the power to levy taxes on individuals and businesses within their jurisdictions.

2. Law Enforcement: Both levels of government can enforce laws through their respective law enforcement agencies, such as the Federal Bureau of Investigation (FBI) at the national level and state police or highway patrols at the state level.

3. Criminal Justice: Both levels of government can create and enforce criminal laws and have separate court systems to try individuals accused of violating those laws.

4. Borrowing Money: Both the national government and state governments can borrow money to finance their operations, subject to certain limitations.

5. Transportation Infrastructure: Both levels of government have the authority to regulate and manage transportation systems, including highways, railways, and air traffic.

6. Concurrent Jurisdiction: Certain offenses can be prosecuted as both federal and state crimes, allowing for concurrent jurisdiction in certain cases.

These are just a few examples of concurrent powers exercised by both the national government and state government in the United States.