Militarism - building up military forces, weaponry and threatening aremed aggression, began arms race between Britain and Germany as they both built up their army/navy
Alliances - Tensions rose so alliances began to form in order to keep the peace (Triple Entente (The Allies), Triple Alliance (Central Powers)) if one country went to war the entire alliance was at war
Imperialism - controlling lands far from home (colonies), build empire using economics, political or military means, Britain and France were fighting for raw materials whilst Austria Hungary was fighting for control over Serbia
Nationalism - deep patriotism and pride to one’s nation/country, many felt that gaining colonies would strengthen their economy and bring glory to the homeland and some felt such pride that they were willing to go to war