Updated timelines

Development of Atomic Theory
La Vie de Maya
John Jr's 9th Grade Year
War of 1812
australia
The 1900s: The Catestrophic Age
World War 2
US History Timeline
Politica educativa
rise of nazism
Evolution from the Wright Brothers' First Plane
Orígenes y despliegue del Sistema Educativo Argentino.
Gun Control
Gun Control Legislation within the United States
Road to WWII
Mark Twain