With the development of the machine gun, a "no man's land" was established between the Allied and Axis trenches. Neither army could advance without sustaining enormous casualties.
<span>Firstly, the American side was losing hope and began to side with the British. The Americans lost hope in gaining independence. Congress used this as a way to trick the British also.</span>
TRUE is the answer to your question
I’m pretty sure it’s the Polio Vaccine