What are some arguments as to why the study of history is important?
it allows people the opportunity to change their behavior.
knowing the past can people change the future.
it people to be able to change the recent past.
decisions people make often affect the lives of others.
historical knowledge keeps people from changing.

1- Knowing the past can help people change the future.

2- Decisions people make often affect the lives of others.

Explanation:

Now we know history we can avoid the mistakes which we once made and try to better the world.

necessary and proper clause. the congress shall have power to all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states, or in any department or officer thereof.