What is a responsibility of the U. S. Senate in foreign policy? A. nominating ambassadors
B. introducing tax bills
C. negotiating treaties
D. ratifying treaties

D.ratifying treaties

Explanation:

Ratification of a treaty is simply agreeing to the terms and conditions of a treaty. This power is reserved only for the Senate as the Constitution gives them the right to approve by a two-thirds majority vote, any treaty proposed by the Executive.

the foundation of greek city-states: following the fall of the mycenaean civilization in the 10th century bc, the area surrounding the empire went through its own mini dark ages. answer and explanation