what is oio?
Coordinates: 12Â°15â²N 15Â°15â²W / 12.250Â°N 15.250Â°W / 12.250; -15.250. Oio is a region in Guinea-Bissau. Its capital is Farim. Other major cities and towns include Nhacra, MansÃ´a, BissorÃ£ and CumerÃ©. The region borders Senegal to the north, the Guinea-Bissau regions of BafatÃ¡, Bissau and Biombo to the east, the Rio Geba/Guinea-Bissau region of Quinara to the south and the Guinea-Bissau region of Cacheu to the west.