Technology of warfare changed drastically during the first world war with the introduction of new weaponry and machinery.
Step-by-step explanation:
These were some of the most important innovations of the time.
Flamethrower : This was one of the most inhumane weapon that was brutally effective in closed quarters but could also kill people in friendly fire.
Machine gun : The introduction of machine gun made firing to enemy lines much easy.
Gas shell : These were a potent weapon of the time and were shorty discontinued.
Submarine : The first submarines were introduced in the end of world war but were not very useful.
Tank the tank was also a modern introduction in the end of world war.
Trench system was the way of warfare that completely campaigned the pitched battle into a long drawn conflict with small gains and losses.