What evidence do historians use to show that the maya had advanced knowledge of astronomy?
1.huge temples aligned to the four cardinal directions.
2.the maya developed a 365-day solar calendar.
3.the maya had identified all the planets in the solar system.
4.maya priests invented the concept of zero.

Why did countries not allow jewish refugees asylum?

Nationalist movements in the ottoman empire resulted in

Which is not a claim kennedy made? a. the fact that communist cuba is so close to american soil is one reason we need to accelerate our space program. b. his decision to shift the study of space to one of the highest american priorities was one of his most important decisions as president. c. within these last months at least 45 satellites have circled the earth. (i think it's this one) d. the mariner spacecraft now on its way to venus is the most intricate instrument in the history of space science. i need this answer really quick, so .