What was the impact of the use of machine guns and barbed wire during world war i?

soldiers lived in trenches when they could not advance without heavy casualties.

field commanders believed it was important to attack first.

casualties were low because soldiers were protected.

soldiers were able to advance rapidly on one another.

Machine guns were the ultimate defensive weapon similar to WW1 and they didn't have machine guns but they did have barbed wire and rifles. Just look at the numbers of casualties on both sides during attacks. ... with small unit infantry tactics, tanks, aircraft, and better use of artillery to support the infantry.

Explanation:

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the answer that best explains what happened to george washington at fort necessity, pennsylvania is : washington was attacked by the french but was able to negotiate with them to peacefully end fighting. the battle took place on july 3, 1754. the battle is considered as being the start of the french and indian war.