What did the four factors leading to the growing European tension include?

The four factors leading to growing European tension included nationalism, where countries prioritized their own interests and identities, often at the expense of others; Imperialism, as nations competed for colonies and resources; militarism, with the arms race and the glorification of military power; and complex alliances that created a web of obligations and entanglements among nations. These factors collectively increased rivalries and mistrust, setting the stage for conflict in the early 20th century.