Until 1850, liberals believed that if European states were organized along national lines, these states could create a peaceful Europe.
Germany, Austria-Hungary and Italy formed the Triple Alliance in 1882.
Because of the conscription, armies expanded significantly between 1890 and 1914.
France, Great Britain, and Russia created the Triple Entente in 1907.
Tensions rose in 1908 when Austria annexed the Ottoman province of Bosnia.
In the years before 1914, conscription, a military draft, had been established as a regular practice in the west.
By the 1914, Serbia, supported by Russia, was determined to create a large, independent Slavic state in Balkans.