The document discusses European imperialism in Africa from the 15th century onward. It began with Portuguese exploration of West Africa for gold and slaves. This grew into the transatlantic slave trade and colonization of Africa for resources and territory by various European powers. Africans resisted imperialism through leaders like the Zulus but Europeans controlled most of Africa by the early 1900s. African independence movements in the 1950s-60s led to the creation of many new independent nations.