Tetrarchy. Any country with sovereign under Roman Empire in Eastern Provinces.

Theodosius II. 401-50. Emperor of Eastern Roman Empire 408-. Theodosian Code. University of Constantinople 425.

Thompson, David. 1770-1857. Explored western US, Columbia River.

Tientsin Massacre. 1870. 20 French killed. China apologizes. End of China/Western co-operation.

Tigranes I. the Great. c104-55BC. King c95-. Armenia becomes strongest Eastern Roman state.

Tuareg. Berber peoples of northwestern Africa.

Urartu. 13-7C BC Kingdom in eastern Turkey. Conquered by Sargon. c600BC Armenians.

Visigoths. 376-711. Western Goths. Alaric sacked Rome 410. Defeated at Vouillé by Clovis 510. Settled Spain, southern France 415-711. Destroyed by Moors 711.

Warsaw Pact. 1955-91. USSR, Bulgaria, Czechoslovakia, E Germany, Hungary, Poland, Romania. Treaty for the combined defence of Eastern Europe under Soviet supreme command.

Webster, Noah. 1758-1843. US lexicographer. Simplified American spelling. Speller 1783. Dictionary 1828.

Webster-Ashburton, Treaty. 1842. Britain, US settle Eastern US-Canada border, suppress slave trade.

Western European Union. 1948. Britain, France, Netherlands, Belgium, Luxembourg. 1954 +Italy, Germany. 50 year treaty. NATO. European Defense Community.

Western Roman Empire. Roman. Carolingian.

Western Sahara. Spanish Sahara. 1976-91 Mauritania, Morocco, Polisario Independence Front dispute. 1991- awaiting referendum.

Western Samoa. Samoa. 1899 German. 1920 New Zealand League of Nations mandate. 1962 Independent.