How did technology make world war 1 different from earlier wars?

Weapons in WW1 were being mass produced and of a greater quality than those of wars before. Barbed wire, airplanes, poisonous gas, submarines etc were introduced which revolutionized war today. Trench warfare was countered and is no longer used to fight.

Weapons are now being produced to counter Trench Warfare. The idea is to keep a strong defensive while creating weapons to at least try an offensive. The gas would settle in the low spots, forcing soldiers out of the trenches and out into the open.

Explanation:

i honesty don't know, good luck tho dawg

he sent troops to protect the students as they entered the school.