Updated timelines

Fredrick Douglass' Life
Fredrick Douglass' Life timeline
The Narrative Of Fedrick Douglass
Frederick Douglass
Frederick Douglass timeline
Westward Expansion
The 90's
History
The Timeline of the Timeline Assignment
The Timeline of the Timeline Assignment
The life of Marijuana
Software Development
Software Development timeline
Civil War
The progress of computers
Polimeros & Nanotecnología, Biomateriales y Producto Nocivo
Polimeros & Nanotecnología, Biomateriales y Producto Nocivo timeline
African American Civil Rights Movement
Development of Atomic Theory
Development of Atomic Theory timeline
The TV
The TV timeline
Research Proposal