How did Ptolemy’s theories contribute to the development of astronomy? He believed that the Earth was flat. He believed that the moon’s rotation caused ocean tides. He theorized that the Earth was moving closer to the sun. He theorized that the Earth was the center of the universe.

What effect did john hay’s open door policy letters have on the imperial powers of britain, france, germany, russia, and japan? a. it provoked the imperial powers to declare war on the united states. b. it caused the imperial powers to restrict trade in their trade with china. c. it warned the imperial powers that the united states would soon declare war on china. d. it signaled to those powers that the united states would take a larger role in world affairs than before.

To keep other european powers from threatening its empire in america, spain sent soldiers, settlers, and?

What can you conclude was a benefit of living a more settled life for prehistoric man? a. more food choices b. more freedom c. less work d. simpler lifestyle !