Guinea Bissau, republic in north-western Africa, bounded on the north by Senegal, on the east and south by Guinea, and on the west by the Atlantic Ocean. Guinea-Bissau includes about 60 offshore islands, among them the Bijagós (Bissagos) Islands. The nation gained its freedom from Portugal in 1974. The area is 36,125 sq km (13,948 sq mi). The capital of Guinea-Bissau is Bissau