Updated timelines

Clean Energy Timeline
The Telephone
Big points in the televisions history
Big points in the televisions history timeline
David Hume Facts
David Hume Facts timeline
The Struggle of The Lubicon Cree to Affirm Their Collective Identity
The Struggle of The Lubicon Cree to Affirm Their Collective Identity timeline
WW2
WW2 timeline
Infant Development
Infant Development timeline
Revolutions
Revolutions timeline
Hitler: Rise To Power
ww2
Chapter 2 Timeline
Chapter 2 Timeline
Astronomers in History Timeline
Astronomers in History Timeline
WW2
WW2 timeline
Canals & Railroads
Technological Advancements (Sepehr and Varun)
REVOLUTIONS!
REVOLUTIONS! timeline