How many Americans have ever lived?

When was the victory of the Plebeians in fight for equality? River that flows through vietnam's capital? Was Sandy Koufax able to pitch on Saturday? What was the name of the Washington Senators home field? What pilot holds the record for the most aircraft carrier landings in one night? When did teofilo stevenson win the 3 gold medals in the Olympics? What sort of factors led to the fall of the western roman empire? How did the hanging gardens of Babylon get water? What was the Irouquois tribe like? What was General Robert E Lee's second invasion of the North in the Civil War? What is the step pyramid of saqqara made of? What were the two wars fought in 1614 and 1644 between the English in Jamestown and the nearby Indian leader? Who did they calll the fuhrer? Who celebrated ancient Egypt winter solstice? Where did he start his voyage? How would the history of the USSR have been different if Trotsky had succeeded Lenin? Who's warnings of threats posed by foreign armies were ignored by the Greeks? Which land was left over from the conflict still kill and cripple Vietnamese? The policy of the US toward the soviet union after ww 2 was shaped by? Where did the word khaki come from?