It's what the secularized culture now uses instead of BC which means Before Christ and AD Anno Domini which translates to In the year of Our Lord. It's ridiculous that they changed it :/
Answer:
B. settling together in villages
D. trading along rivers and coasts
Explanation:
The Neolithic Revolution was the one that changed dramatically the lifestyle of the humans. Instead of being hunters and gatherers, the humans started to cultivate crops, thus they started to engage in agriculture. This resulted in surplus production of food, which was enough for the whole year, but also for trade. Small scale trade also started to occur along the rivers and along the coastlines, which was also a massive change.
It is "C. the power to make treaties" that requires a 2/3 vote from the Senate, since the Founding Fathers wanted to ensure that the United States only made such treaties with reliable nations.
Wilbur and Orville Wright at Kitty Hawk in November 21, 1783.
Good luck!