The third blank is limited I believe and the first is veto?? And the second is override.
Answer:
In a federal system, a national government and the state governments share power. In a unitary system, all power lies with the national government, whereas in a confederation, the vast majority of power rests with the states.
Explanation: I hope This Helps
Your anwser is A. the senate is more elite.
it was the westward expansion
Caused a dramitic decline of indians