Updated timelines

Atomic Theory
Atomic Theory timeline
The American Dream
history
history timeline
Proyecto GNU Linux
Proyecto GNU Linux timeline
Caleb Tamayo
The Life of Martha Barrios-Genie
Child Adoption
Presidental Timeline Period 6. Group B
War of 1812
Memorias ram y rom
Memorias ram y rom timeline
Revolutionary War 1775-1787
Linux
Nancy Wilkes World History CPS - Diseases
Nancy Wilkes World History CPS - Diseases timeline
Queen Elizabeth
Presidential Timeline Period 6 Group D
historia del software libre
historia del software libre timeline