Eastern Crisis (jul 21, 1875 – nov 28, 1878)
forced Bismarck to make a choice between Russia and Austria
begin w. a revolt against Turkish rule in Bosnia and Herzegovina; then spread to Bulgaria, Serbia, Montenegro, etc - Russia can't tolerate Turkish victory; set up a pro-Russian Bulgaria, wch infuriated Austria
Added to timeline:
Bismarck's alliance system
the defeat of France by Prussia in 1871 led to the creation ...