The U. S. Constitution lists 18 grants of power to Congress including authority over matters of war, powers related to the control of the economy, and independent powers of taxation. These powers are called .

These powers are called the Expressed power of the Congress.

Explanation:

The Expressed Powers of the Congress are 18 set of powers that are granted to the Congress assured by the constitution that can be used by them as they please without any outside interference

This includes very important powers related tot eh independent power o taxation and quite a few matters of war.

This is done so as to make sure that the country remains in the hand of the representatives of the people directly elected by the people in the important matters.

what is the tax base for the sales tax?

it should be (usually ) 6%