Why did european nations face financial challenges after world war i? check all that apply
they needed to recruit soldiers for the military.
they needed to rebuild destroyed infrastructure.
they needed to pay higher salaries to workers.
they needed to repay money they had borrowed.
they needed to finance students’ education

The correct option si: They needed to repay money they had borrowed.

On November 11, 1918, Germany finally signed the armistice ending the First World War, in which the allied powers emerged victorious. In 1919 the representatives of the winning powers met in Paris to elaborate the Peace treaties; these treaties showed the consequences they had to pay to the defeated countries.

no every country is held to the same degree as others just some member countries such as the usa and germany are more economically sound so the need to show there support to all others  

the anwser is missions