How did the olmecs control water resources in ancient mesoamerica

What where the five beliefs of the french philosophers?

Match the events to the impact they had on africa during the late 19th century 1.colonization of the congo 2.berlin conference of 1884 3.berlin act of 1885 settled tutorial disputes between european nations prohibited the slave trade in africa marks the beginning of scramble for africa

In 1819, what did the united states obtain from spain for $5 million?