Why is monetary and fiscal policy important to the economy?

They're used to regulate economic activity over time.

Explanation:

They're used to accelerate the growth of the economy when it is in a depression, or slows down the economy when an economy starts to overheat per say.

the supreme court plays a big role in government. the constitution gives them ability to check the president and the congresses actions and dictate if their actions are allowed by the constitution or not.

hope this .