Ow do you account for the huge commercial success of Back To the Future (Zemekis) in 1985?

The essay is for a first year undergraduate for the Contemporary Cinema module.

Referencing Requirements:
Douglas Gomery, a?The New Hollywooda in The Oxford History of
World Cinema, Nowell-Smith (ed), (1996)

Michael Hammond, a?The Agent,a in Contemporary American
Cinema eds. Linda Ruth Williams & Michael Hammond (2006)

Michael Hammond, a?Back to the Future,a in Contemporary American
Cinema eds. Linda Ruth Williams & Michael Hammond (2006)

Peter KrA¤mer, a?Disney and Family Entertainment, in 6
Contemporary American Cinema eds. Linda Ruth Williams & Michael Hammond
(2006)