Question

These new military technologies resulted in a huge expansion of the military tactic known as trench warfare and made _______ the most deadly war up to that point in history.

Tanks
Machine Guns
Poison Gas
Flamethrowers
Airplanes

Answer 1

The answer is World War 1

Step-by-step explanation:

Its on USATestprep

Answer 2

Girls the correct answer is:B/Machine Gas