Updated timelines

World War 2 events
Child development
Lewis & Clark
Causes For The War of 1812
Biography
El segle XX
Línea del tiempo de la tecnología
Causes of the Civil War
Civil War
Western Expansion
Civil Rights Time-Toast
Infancy and childhood
sdsdds
Jennifer's TimeLine
Εργογραφία Ξενόπουλου
History of Multilingual Competency in the United States