Updated timelines

George Washington Carver
WWI Timeline
The Life of Benjamin O. Davis Sr.
Korean War Timeline
Harriet Tubman
The Life of Sojourner Truth
Phillis Wheatley Timeline
The Life of Frederick Douglass
The Life of Phillis Wheatley
Алекса́ндр Алекса́ндрович Блок
The History of Basketball
George Washington Carver
THe Life of Frederick Douglass
Italian and German Unification
Nat Turner
Life Time of Scott Joplin