Why was the loss of Alsace and Lorraine a major blow to France?

The loss of Alsace and Lorraine to Germany after the Franco-Prussian War in 1871 was a significant blow to France due to both territorial and symbolic reasons. These regions were culturally and historically tied to France, and their loss ignited a strong sense of national humiliation and resentment. Additionally, the annexation weakened France strategically and economically, as these territories were rich in resources and industrial potential. This loss fueled a desire for revenge and reclamation, contributing to tensions leading up to World War I.