1 - A
2 - A
3 - A
Explanation - I just looked it up
George Washington was the president that served at the constitutional convention.
Answer: Despite its reputation for brutal warfare, the Mongol Empire briefly enabled peace, stability, trade, and protected travel under a period of “Pax Mongolica,” or Mongol peace, beginning in about 1279 and lasting until the empire's end. But Genghis Khan's death in 1227 ultimately doomed the empire he founded
Explanation:
