Final answer:
The Western Front was characterized by trench warfare and a stalemate, while the Eastern Front had more mobile battles. The Germans prevailed on the Eastern Front by outmaneuvering the Russians.
Step-by-step explanation:
The Western and Eastern Fronts were two major theaters of military operations during World War I. On the Western Front, both the Allied forces and the German army dug trenches to protect themselves from enemy attacks. This led to a stalemate and a war of attrition, where neither side could make significant advancements. On the Eastern Front, the fighting was more mobile, with Russian, German, and Austrian armies engaging in highly maneuverable battles. However, the Russians were eventually outmaneuvered by the Germans, who surrounded and defeated their armies.