The greatest impact of the columbian exchange was
a) the annual storage of crops for native peoples.
b) the transport of slaves from the americas to africa.
c) the spread of new diseases, which led to vaccinations.
d) the transfer of plants, people, and ideas between the americas, europe, and africa.

hi!

your correct answer would be a

~courtney

where is the cartoon dude

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.

b. ensure mutual protection from communism.

.