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

The slave dred scott sued for his freedom because he was born a free man. he had lived in a free state. slavery violated the 13th amendment he had been freed by pres. lincoln.

How did the actions of tsar nicholas 2 and his wife lead to revolution in russia

How does the supremacy clause of the u.s. constitution affect the states? o a. it requires each state to establish a supreme court. b. it declares that the federal government can take away state powers if necessary. o c. it allows state governments to overthrow the federal government if necessary. o d. it ensures that the u.s. constitution overrules each state constitution