In 2004, which Atlanta-based wireless company acquired AT&T Wireless to become the largest U.S. carrier?

Atahualpa, the last king of which people, was executed on the orders of Francisco Pizarro in 1533? Ancient Athenians spoke the Attic dialect of which language? Athina Roussel inherited billions when she turned 18 in 2003 as the granddaughter of which Greek shipping tycoon? Bob Cousy starred for which NBA team from 1950 to 1963? Which Union general captured Atlanta in September 1864 and burned much of it before his March to the Sea? What term describes the region of the atmosphere above a nation's territory, over which it claims sovereignty? Which element, atomic number 30, is often used in sunscreen in the form of its oxide? Which element, named after a famous physicist, has atomic number 100?