In 1521, with help from smallpox, Hernán Cortés and a few hundred Spaniards crushed which empire?

A radio frequency of 150 megahertz falls in which band? In 1505, Christ's College was founded at which university? On Martin Waldseemüller's 1507 map, the New World is given which name for the first time? In 1521, which Portuguese navigator, leading a Spanish expedition around the world, was killed in the Philippines? Gustav I Vasa ruled which country from 1523 to 1560? In 1527, mutinous troops of which empire's ruler, Charles V, sacked Rome in an event often seen as ending the High Rena… Which conquistador founded Peru's capital, Lima, in 1535? Which state, with a total area of only about 1,545 square miles, is smaller than Florida's Miami-Dade County?