Which factors led to stalemate in the trenches? Check all that apply.

Defensive weapons were better than offensive ones. and Trenches were designed for defense."

Explanation:

answer-the island had airfields that the u.s. military needed.

  the common sense as a pamphlet written by thomas paine. it promoted the independence of the colonies from british rule. the distribution of this pamphlet was great, it reached people everywhere and it was even read aloud at places people met. it also unite the colonists before the revolutionary war.

answer is d