What was social Darwinism use for in world war 1?

During World War I, Social Darwinism was often invoked to justify imperialist and militaristic policies among nations. Proponents argued that stronger nations had a right to dominate weaker ones, framing military conflict as a natural struggle for survival akin to Darwinian principles in nature. This ideology was used to rationalize the sacrifices made during the war and to foster a sense of nationalism, urging populations to view their countries as superior and destined to prevail. Ultimately, Social Darwinism contributed to a mindset that dehumanized the enemy and intensified the brutality of the conflict.