Country in the West Indies, off the coast of Venezuela. government Trinidad and Tobago is an independent republic within the Commonwealth. The 1976 constitution provides for a president as head of state, and a two-chamber parliament, consisting of a senate of 31 members and a house of representatives of 36. The president appoints the prime minister and cabinet, who are collectively responsible to parliament. The president also appoints the senators, 16 on the advice of the prime minister, six on the advice of the leader of the opposition, and nine after wider consultation. The 36 members of the House of Representatives are elected by universal adult suffrage. Parliament has a life of five years. Tobago was given its own House of Assembly 1980. It has 15 members, 12 popularly elected and three chosen by the majority party. history For early history, see American Indian. Trinidad and Tobago were visited by Columbus 1498. Trinidad was colonized by Spain from 1532 and ceded to Britain 1802, having been captured 1797. Tobago was settled by the Netherlands in the 1630s and subsequently occupied by various countries before being ceded to Britain by France 1814. Trinidad and Tobago were amalgamated 1888 as a British colony. Trinidad and Tobago's first political party, the People's National Movement (PNM), was formed 1956 by Dr Eric Williams and when the colony achieved internal self-government 1959 he became the first chief minister. Between 1958 and 1961 it was a member of the Federation of the West Indies but withdrew and achieved full independence, within the Commonwealth, 1967, Williams becoming the first prime minister. A new constitution was adopted 1976 which made Trinidad and Tobago a republic. The former governor-general, Ellis Clarke, became the first president and Williams continued as prime minister. He died Mar 1981 without having nominated a successor and the president appointed George Chambers; the PNM formally adopted him as leader May 1981. The opposition, a moderate left-wing party grouping led by the deputy prime minister, Arthur Robinson, was during the next few years reorganized as the National Alliance for Reconstruction (NAR), until in the 1986 general election it swept the PNM from power and Arthur Robinson became prime minister.