Who was the 16th century astronomer who used mathematics to conclude that earth revolves around the suna. andreas vesaliusb. rené descartesc. nicolaus copernicusd. galileo galilei

Powers of states the first letter of the answer is r.

Which statement is true of both presidential and parliamentary systems of government?

Match these items. 1 . stephen douglas published "north star" 2 . frederick douglass first african slaves arrived in jamestown 3 . crittenden compromise proposed kansas-nebraska act 4 . republican party extend 36° 30' line to california 5 . abolitionists servitude in exchange for passage to the united states 6 . indentured struggle between proslavery and antislavery groups 7 . jefferson davis formed to prevent spread of slavery 8 . "bleeding kansas" wanted slavery abolished 9 . uncle tom's cabin president of confederacy 10 . 1619 harriet beecher stowe