Why was Germany required to pay for the reperations for ww1?

Germany was required to pay reparations after World War I primarily due to the Treaty of Versailles, signed in 1919. The treaty held Germany responsible for the war and its resulting damages, reflecting the Allied powers' desire to compensate for the immense destruction and suffering caused. The reparations aimed to weaken Germany economically and prevent future military aggression, although they contributed to severe economic hardship and political instability in the country.