My limited knowledge of European history allows me to know that the latter half of the 19th century and earlier part of the 20th were a time of heated relations between powers. Traditional powers (Britain and France) feared the rise of Germany as a competitive power in the continent and on the global stage, alliances were brokered, nations expanding their sphere of influence and colonial possessions, and all that nice stuff.
My question is what pan-European conflicts, or -alternatively- grand conflicts which at least draw focus and attention of the global and continental community within Europe can there be given a creative timeframe of 1880 to 1920* (the latter does not require a Great War of 1914 to 1918 to precede it)? Perhaps this can be summarized as things that would steal the thunder of the OTL's Great War, or take it's place.
*I'm not saying a conflict which lasts from 1880 to 1920, but rather one that would exist somewhere in between those years.