Question

Which technology helped bring trench warfare to a stalemate?

O machine guns
O air reconnaissance
O barbed wire
O mines

Answer 1

according to the website the answer is;

Step-by-step explanation:

Tanks. Tanks were developed by the British Army as a mechanical solution to the trench warfare stalemate. They were first used on the Somme in September 1916, but they were mechanically unreliable and too few in number to secure a victory.