Which of the following weapons finally broke the stalemate on the western front?
airplane
tank
machine gun
poison gas

Option: Tank

Explanation:

Tanks played a significant role in changing warfare forever in the World. The first tanks were built by the British and put into action against the Germans in World War I. The tank was developed to break the stalemate on the Western Front in World War I. Military during that time were favoured in defence. It was impossible to use the break of stalemate before the enemy rushed to reinforcements by stabilizing the front. The coming of the military technology weakens the enemy power to stabilize the front.

answer; i believe the correct answer is benjamin harrison;