Wrangel, General, 419 Writing, 74, 75, 78, 79, 80, 94, 124, 176; dawn of, 57 Wycliffe, John, and his followers, 286, 304, 433 X Xavier, Francis, 400 Xenophon, 150 Xerxes, 136, 138, 147, 150 Y Yang-Chow, 300 Yang-tse-Kiang, 173 Yangtse valley, 173 Yarmuk, battle of, the, 253, 431 Yedo 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