Course of Second world War:

# World War II officially began on September 1, 1939.
# Germany conquered – Poland, Norway, Denmark, Belgium, Holland and France.
# Battle of Britain – Germany vs Britain (air battle; German Air force =Luftwaffe).
# Battle of Stalingrad – Germany vs USSR. (Ope

These were the causes of second world war.
(1) Humiliation by the Treaty of Versailles

    #War indemnity.
    #The provision for disarming Germany.
    #Saar coal mine to France for 15 years.
    #Polish corridor was given to Poland.
    #City of Danzing was made free.

(2) Growth of Fasc