I want to know Which was the first movie remake in the history of movies? I do not mean reboot. I mean remake i.e. with same story (mostly).
Perhaps the earliest remake is The Squaw Man:
These films--and even the subsequent The Squaw Man (1931)--were filmed by Cecil B. DeMille.
The Squaw Man went on to become the only movie successfully filmed three times by the same director/producer, DeMille. He did a silent remake in 1918, and a talkie version in 1931.
I got one from 1904. French movie "Personal" got copied by Edison in the same year: http://www.imdb.com/title/tt0000492/