From left, clockwise: in [[1492]], [[Italians|Italian]] navigator [[Christopher Columbus]] discovers [[United States|America]]; the [[American Revolution]]; The [[French Revolution]]; the [[Atomic Bomb]] from [[World War II]]; an alternate source of light, the [[light bulb]]; for the first time, a [[Neil Armstrong|human being]] [[Moon landing|sets foot on the moon]] in 1969 during the [[Apollo 11]] moon mission; [[aeroplane]]s become the most&#x2D;used way of transport though the skies; [[Napoleon Bonaparte]], in the early 19th century, affects France and Europe on subjects of [[expansionism]] and [[modernization]]; [[Alexander Graham Bell]]'s [[telephone]]; in 1348, the [[Black Death]] kills over 100 million people worldwide, and over half of [[Europe]], in two years. (Background: An excerpt from the [[Gutenberg Bible]], the first major book printed in the West using movable type, in the 1450s)