Specific reasons: the formation of two imperialist military blocs and the further development of three pairs of contradictions in imperialist countries.
Direct cause: The assassination of Sarajevo took place in Bosnia, Balkan Peninsula.191April 28th was the national day of Serbia. Archduke Ferdinand, heir to the Austro-Hungarian Empire, and his wife were shot dead by Serbian nationalist Principe, a young Bosnian student belonging to the Serbian Black Hands Association. This incident led the Austro-Hungarian Empire to declare war on Serbia on July 28th, which became the fuse of the First World War.
Expand the influence of data war
The First World War lasted more than four years. More than 30 countries and 654.38+0.5 billion people were involved in the war, which caused great material and spiritual losses to mankind.
The great achievement of the First World War was that it severely weakened the power of imperialism and destroyed the ancient feudal empires in Europe, such as the Russian Empire, a Christian orthodox country in Eastern Europe, the German Empire, a Protestant country in Central Europe, and the Austro-Hungarian Empire, a dual monarchy of Christianity and Catholicism in Central Europe and the northwest Balkans.
Imperialist countries such as Britain, France and Italy were weakened, and the Ottoman Empire, which once spanned Europe, Asia and Africa, also disintegrated.
At the end of the war, the Russian proletariat on the eastern border of Europe opened a weak link in the imperialist chain and won the Russian socialist revolution in 10. At the beginning of the war, the proletarian revolutionary movement in capitalist countries and the national liberation movement in Asia, Africa and Latin America appeared a new situation with climax after climax. ?
Baidu encyclopedia-world war I