Zambia zăm´bēə [key], officially Republic of Zambia, republic (2005 est. pop. 11,262,000), 290,584 sq mi (752,614 sq km), central Africa. It borders on Congo (Kinshasa) in the north, on Tanzania in the northeast, on Malawi and Mozambique in the east, on Zimbabwe, Botswana, and Namibia in the