T’ang. 618-907. Chinese dynasty. Golden Age. Overthrown by provincial warlords.

Tatars. Ancient: Mongols who merged with Golden Horde, invaded Europe 13C. Tatarstan.

Tatarstan. 8C Bulgars settle. Tatars. 13C Golden Horde. 1552 Russia. 1991 Independent Republic within Russian Federation.

Ukraine. 3C Ostrogoths. Rus. 1240 Golden Horde. 1392 Lithuania. 1569 Poland. 1648 Independent Cossack state. 1654 Muscovy protectorate. 1772 Russia. 1918 Independent. 1923 USSR. 1991 Independent. CIS.

Uzbekistan. Bactria. 711 Arabs. 1220 Golden Horde brings Uzbeks. 1494 Shaybanids. 1875 Russia. 1924 USSR. 1991 Independent. CIS.

Uzbeks. Siberian Turkic-Mongol peoples with Golden Horde from Siberia. Uzbekistan.

Earhart, Amelia. 1898-1937. US aviator. First solo Atlantic flight by a woman, 1932. Lost in attempt to circle planet.

LogicalPositivism. 1920s. Philosophy. Only experimentally verifiable scientific truth counts. Vienna Circle. Wittgenstein.

Mach, Ernest. 1838-1916. Founded Scientific Positivism 1905. Relates physics and psychology. Vienna Circle.

Schlick, Moritz. 1882-1936. German Logical Positivist philosopher. Led Vienna Circle.

Vienna Circle. 1920s Intellectual meetings. Formulated Logical Positivism. Schlick. Gödel.