How did Germany change France?

Germany significantly influenced France through both cultural and political means, particularly following the Franco-Prussian War of 1870-71, which resulted in the loss of Alsace-Lorraine and fueled French nationalism. This loss spurred a desire for revenge and the establishment of a more unified French identity. Additionally, in the aftermath of World War II, Germany's economic recovery and European integration efforts prompted France to engage in cooperation, leading to the formation of the European Union, which reshaped France's political landscape and relationships in Europe.