In 3 to 5 sentences, compare the eastern and western fronts of World War I in terms of their geography and strategies

The eastern front of World War I was characterized by its vast and open expanses, stretching from the Baltic Sea in the north to the Black Sea in the south. This allowed for more fluid and mobile warfare as both sides sought to outmaneuver each other. In contrast, the western front was marked by a series of fortified trenches running from the North Sea to the Swiss border, leading to a stalemate and a war of attrition. The strategies employed on the eastern front tended to be more aggressive and offensive, with both sides looking to gain territory quickly and decisively. On the western front, the focus was on defensive strategies aimed at holding the line and wearing down the enemy through attrition.