Updated timelines

Civil War Battles
Geothermal: Past, Present, and Furture
After the Cold War
Transcontinental Railroad
Transcontinental RailRoad
Transcontinental Railroada
Transcontinental Railroad
URSS
Absolutism and Enlightement A.L.F
Elijah Spiros' Cold War Timeline
Battle of Quebec
fijian history
The History of Skateboarding
linea del tiempo
Linea del Tiempo
How the microwave oven has changed over time