Zenta, Battle. 1697. Austria defeats Turks, becomes greatest power in Europe.

Zeppelin, Ferdinand von. 1838-1917. German constructor of dirigibles 1900-. 1928 Graf Zeppelin around world. Transatlantic service 1928-37. Hindenburg.

Zimmerman Telegram. 1917. Germany suggests Mexican alliance if US enters war. Interception aroused public vs Germany.

Zinoviev, Grigori. 1883-1936. Russian triumvir with Stalin, Kamenev 1919-26. Executed in Purge. COMINTERN chairman 1919-.

Zinzendorf, Nikolaus. 1700-60. German Pietist. Founded Moravian church.

Zoë. 978-1050. Byzantine Empress 1028-. Married and murdered Romanus III. Crowned lover Michael IV and son Michael V. Married Constantine IX.

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

Zwingli, Huldrych. 1484-1531. Swiss humanist and religious reformer. Zurich Reformation 1522. Urged priests to marry. Attacked Roman mass and worship of images. Swiss Evangelical Church. Killed in Kappel Wars.