Amilcar Cabral (amēl´kär kəbräl), 1924–73, revolutionary leader of Guinea-Bissau. Returning from Angolan exile (1956), he founded Guinea-Bissau's nationalist movement (PAIGC). By 1959, Portuguese repression prompted Cabral to adopt guerrilla tactics. By 1973 when he was assassinated, the PAIGC controlled half of Portuguese Guinea. When Guinea-Bissau became independent (1974), Cabral's brother, Luis, became president (1974–80).