World Council of Churches. 1948. Amsterdam.

Worms, Concordat of. 1122. Agreement between Pope Calixtus and Emperor Henry V to share power to appoint bishops and abbots. Spiritualia, regalia vested separately.

Wright, Frank Lloyd. 1869-1959. US “organic” architect. Introduced glass and steel forms. Guggenhem Museum 1943-59. Taliesin West 1938.

XYZ Affair. 1797. US attack French ships after refusing to bribe ministers. Settled 1800. French Revolutionary Wars.

Yggdrasill. Ash tree of existence, life and knowledge in Scandinavian legend.

Yoga. Hindu and Buddhist system of meditation, breathing and exercise to achieve spiritual enlightenment.

Yüan. 1279-1368. Chinese Mongol dynasty founded by Kublai Khan. Grand Canal. Postal system. Marco Polo.

Zaghlul, Sa’d. 1857-1927. Egyptian Wafd leader for independence from Britain. Prime Minister 1924.

Zaimis, Alexander. 1855-1936. Greek Prime Minister 1897~1928. President 1929-35. Exiled 1935-.

Zarathustra. Zoroaster.

Ziggurat. 2200-500BC. Mesopotamian stepped pyramids.

Zollverein. 1818-71. German economic agreements led by Prussia...German Customs Union 1834. First steps toward union.

Zoroaster. Zarathustra. c628-551BC. Persian religious reformer, founder of Zoroastrianism. World is an eternal struggle between forces of good and evil.

Zoroastrianism. 550BC-650. Monotheistic, dualist national religion of Persia. =Parsiism. Zoroaster.