What did the Mongols control that no other empire has done before or since?

Which of the following was the center source of energy during the industrial a revolution

What was martin luther king, jr., referencing in the passage that brought him to lead a protest in birmingham?

Based on the trends shown in this chart, which of the following predictions best tell about the u.s. population in 2020? (3 points) i. more than half of the u.s. population will live near an interstate highway. ii. less than one-quarter of the u.s. population will live in urban areas. iii. more than half of the u.s. population will live in suburban areas. i only iii only i and iii only ii and iii only i, ii, and iii