Answer:
b hold the national government money
The two american empires were the Incas and Aztecs. They carried Gold and Silver.
The Articles required unanimous consent to any amendment, so all 13 states would need to agree on a change. Given the rivalries between the states, that rule made the Articles impossible to adapt after the war ended with Britain in 1783.
The US government wanted to win the Space Race, and since they saw the USSR had already put an object into space they needed to catch up or beat them.