Answer:
A.) The biggest difference between the eastern and western fronts during WW1 was that the allied powers eventually won the war, whereas in the east, the central powers forced Russia to surrender with the Treaty of Brest-Litovsk in March of 1918.
B.) Trench warfare developed on the Western Front but not in the Eastern Front because the Western Front had more advanced technologies( weapons to be exact, that were more better and deadly)
Explanation:
