What do Namibia Cameroon and Tanzania common?

Namibia, Cameroon, and Tanzania all share a common trait: they are all African countries that have experienced periods of colonial rule. Namibia was under German colonial rule from 1884 until the end of World War I, when it was transferred to the administration of South Africa. Cameroon was under German and then French colonial rule from the late 19th century until its independence in 1960. Tanzania was under German and then British colonial rule from the late 19th century until its independence in 1961.