Why did Americans fight mostly on the western front?

Americans primarily fought on the Western Front during World War I because that was where the most intense and decisive battles were taking place, particularly against the Central Powers, including Germany. The Western Front was characterized by trench warfare and a stalemate, making it critical for the Allies to strengthen their forces to achieve a breakthrough. American troops were needed to bolster the exhausted Allied forces and provide fresh manpower, contributing to the eventual success in key offensives. Additionally, the U.S. aimed to make a significant impact on the war's outcome and demonstrate its emerging role as a global power.