Answer:
Industrial revolution played an important role in World War I. It allowed for new machinery to be produced at a much faste rate than ever before. This increase in technology combined with old war tactics led to total carnage that shocked the world.
1. it was mass production. With mass production weapons could be made faster than ever before
2. New weapons to WW1
3. Chlorine gas
4. Flame throwers
5. Vehicles of WW1