Answer: Trench warfare.
Step-by-step explanation:
The type of warfare led to a stalemate (no one wins) on the Western front during WW One is trench warfare.
Trench warfare is simply a form of land warfare whereby occupied fighting lines are used which consists of military trenches, such that the troops are protected from the attacks of the enemy.
During World War I, the trenches were long, and dug into the ground in the place where the soldiers lived which resulted in it being uncomfortable and thus made some soldiers have trench foot.