The eastern and western front of World War I had similarities and differences in 1 to 2 sentences explain how the eastern front in western front compared in terms of geography and strategies

The eastern front of World War I covered a vast area of open plains, forests, and marshes, while the western front consisted of a network of trenches spanning from the English Channel to Switzerland. The eastern front saw more mobile warfare and larger territorial gains and losses, while the western front was characterized by static and heavily fortified trench warfare.

Simply that

The eastern front had a larger geographical area and more mobile warfare, while the western front was characterized by trench warfare and static lines.