Oliver Tambo is a lawyer who starts a new firm with Mandela and eventually goes on to become one of his biggest allies in the anti-apartheid struggle, becoming president of the ANC after Luthuli. Although Tambo is a staunch and respected activist, he causes some controversy within the ANC later in his life due to his willingness to negotiate with South Africa’s white supremacist government. Ultimately, however, he helps to build the foundation for a democratic South Africa. He dies of a stroke just before Mandela gets elected president in the nation’s first free election.