Angola is a country located in Southern Africa, bordered by Namibia, Zambia, and the Atlantic Ocean. It became a focal point for European expansion during the late 15th century, particularly due to the demand for slave labor and the establishment of the slave trade. In the context of resistance to European expansion, Angola's struggles against Portuguese colonization were significant, particularly during the 19th century. The nation later played a crucial role in the decolonization movement after World War II, gaining independence from Portugal in 1975 after a protracted liberation struggle.