Which of these is true about the navigation acts? a. they prevented american colonists from selling their crops to england.b. they american colonies build factories.c. they kept american colonists from trading with other english colonies.d. they encouraged shipbuilding in the american colonies.

Explanation:

D     APΕX

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.