A stalemate is a situation in which further action is blocked. A stalemate during World War I was broken in 1917 by A. American entry into the war. B. a significant German naval victory. C. the use of chemical weapons. D. the invasion of Normandy.
The stalemate during world war 1 was broken in 1917 by “the entry of the US into war”, since with the entry of the US the allies obtained numerous weapons and more troops
