Key Historical Events. The Gambia was discovered by the early Portuguese navigators, but they made no settlement. During the 17th century various companies of merchants obtained trading charters and established a settlement on the river, which, from 1807, was controlled from Sierra Leone; in 1843 it was made an independent Crown Colony; in 1866 it formed part of the West African Settlements, but in Dec. 1888 it again became a separate Crown Colony. The boundaries were delimited only after 1890. The Gambia achieved full internal self-government on 4 Oct. 1963 and became an independent member of the Commonwealth on 18 Feb. 1965. The Gambia became a republic within the Commonwealth on 24 April 1970. The Gambia with Senegal formed the Confederation of Senegambia on 1 Feb. 1982; this was officially dissolved on 21 Sept. 1989.
Unable to display preview. Download preview PDF.