Bay, 401
Yorktown, 338
Yuan dynasty, 290, 433
Yucatan, 74
Yudenitch, General, 419
Yuste, 314, 317
Z
Zama, battle of, 182, 430
Zanzibar, 329
Zarathustra, 241
Zeppelins, 413
Zero sign, 257
Zeus, 211
Zimbabwe, 397
Zoophytes, fossilized, 13
Zoroaster (and Zoroastrianism), 241, 243, 255