Updated timelines

Computers
computers
Mathematics: from then to now
nicki minaj
iPhone models - Daniel Appleby
Scouts timeline Aiden.k
1º Guerra Mundial
Revolutions
Historia y evolución de la informática
Pottawatomie Trail of Death
Acontecimientos Históricos
The life of Madame C.J Walker (Sarah Breedlove)
German and Italian Unification
Andrew Jackson
Pottawatomie Trail of death
Marquez