(1) Gold and Petroleum Trade Routes
(2) Sources and Destinations of Enslaved Africans
(3) Obstacles to Colonization of the Western Hemisphere
(4) Origin and Spread of Nationalist Revolutions
(1) forced people to migrate
(2) encouraged the growth of secularism
(3) created conditions leading to the Encounter
According to this map, what is one reason African slaves were traded to countries in the Western Hemisphere?