What were US soldiers who fought in WWI called?

Explanation:

It's unknown exactly how U.S. service members in World War I (1914-18) came to be dubbed doughboys—the term most typically was used to refer to troops deployed to Europe as part of the American Expeditionary Forces—but there are a variety of theories about the origins of the nickname

the correct answer option is: weapons.

explanation:

tensions rose as the two opposing superpowers competed for 'weapons'.

referring to the cold war (1945-1991), the two superpowers, usa and ussr, experienced a phase of struggle and conflict with each other. these two superpowers considered each other as a threat to their survival and thus opted for policies to strengthen their positions.

the two superpowers never went to war with each other directly but competed for weapons to preserve their positions.

hello your answer is d