How did alexander hamilton cheat on his wife and how did they get back together?

What were the main features of the aristotelian-ptolemaic model of the cosmos

Prior to the presence of europeans on the continent, the slave trade in africa a) did not exist in any form. b) was limited to internal trade only. c) included the trans-saharan and indian ocean slave trade. d) was rarely needed due to the lack of an agricultural economy.

Between 1870 and 1916, approximately how many immigrants came to the united states? 10 million 25 million 75 million 125 million