Nullification was particularly prominent during which era in American history?

In presidential debates, it is common for

A) challengers to have much more to gain from debating than incumbents. B) nonvoters to favor the challengers over an incumbent. C) the minority party to enjoy an advantage. D) incumbents to have more to gain than a challenger. E) the debate to have little effect on the election outcome.

In order for the United States to make a treaty with China, what majority of U.S. Senators needs to approve?

A. 0.5 B. 0.66666667 C. All of them D. 0.75 E. 0.8