Spanish conquest By mattallpass Period: Jan 1, 1475 to Oct 31, 1600 The Spanish Conquest Aug 3, 1492 Christopher Columbus reached the 'New World.' Oct 8, 1497 aztecs finish building great temple at tenochtitlan Jun 4, 1510 Balboa Reached the Pacific Ocean. Oct 8, 1510 balboa establishes first permanent establishment Jun 30, 1520 la noche triste Oct 8, 1520 montezuma II stoned to death Aug 8, 1521 spanish capture tenochtitlan Jun 8, 1534 Atahualpa executed Dec 2, 1547 The Death of Cortes