3 decisions made by congress that helped define the authority of the national government

The power of congress is both constitutional and evolutionary.  The constitution grants power to congress that involves all the authoritative laws.

Explanation:

The U. S government is divided into three categories : Legislative, Executive and Judicial and congress categorize legislative. They upheld the Senate house and office of Parliamentarian.

d) the constitution rights of native americans and their right to self-government on reservations

it was on the rise and doing very well and would continue to do well until the great depression from 1929-1939