What were the characteristics of warfare during World War I? Check all that apply.Industrialization resulted in the creation of new weaponry.Casualties were lower than in previous wars.A stalemate prevented either side from making progress.Nations agreed to abstain from the use of poison gas.Germany used unrestricted submarine warfare to attack Allied ships.

Industrialization brought weapons such as machine guns, tanks, and heavier artillery to the battlefield, so A is correct. Trench warfare created a long stalemate in which neither side made much progress, and Germany used unrestricted submarine warfare against Allied ships, making C and E correct. Casualties were extremely high, not lower than in previous wars, and poison gas was used rather than avoided by agreement.

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