Updated timelines

Group 2
Group 3
British History
British History timeline
Group 4
Group 1
Early Canadian Prime Ministers -Prabhjot
US money timeline
History of the Atom
The Labor Movement
Labor Movement
Labor Movement timeline
La Vida de Amanda Freeman
La Vida de Amanda Freeman timeline
Progressive Era
Progressive Era timeline
Ye old Great Depression Antonine college Iskandar
Ye old Great Depression Antonine college Iskandar timeline
3 Generations Timeline
3 Generations Timeline
Carmen Gilliam- US energy
Carmen Gilliam- US energy timeline
The Labor Movement 1900-1939