Which statement best describes the overall effects of new technology, such as poison gas and improved artillery, during World War I?

Poison gas and improved artillery made attacks more destructive, but they did not reliably let armies break through heavily defended trench lines. As a result, both sides often suffered heavy casualties without gaining much ground, contributing to the stalemate on the Western Front. The best choice is “New technology contributed to the stalemate on the western front.”

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