Final answer:
Militarization is the term used when one country increases its army because others did. It refers to the process of building up military forces and increasing their readiness for mobilization. This was a prominent factor in Europe on the eve of war.
Step-by-step explanation:
Militarization is the term used when one country increases its army because others did. It refers to the process of building up military forces and increasing their readiness for mobilization. This was a prominent factor in Europe on the eve of war, as nations engaged in an arms race, continuously expanding their military size and capabilities.