How did nationalism, imperialism, and militarism set the stage for ww1

The location of the Balkans, and with some countrymen controlled by other countries, became the boiling pot of Europe. Being a nationalist means being a patriot and to be independent of your own country which you're proud of, while imperialism is dedicated in grabbing more foreign lands.Germans felt that there are a lot of areas that were conquered by England and France already, and that led Germany to have conflict with the two countries as it plans to make a navy and conquer more lands. Militarism also became a conflicting matter as they provided military aid to their allies, and that led Russia to become a militarist by helping England and France to fight agains Germany - which got allied with Austria and Hungary.