What immediate need led to an invention in 1838 by john deere?
a way to remove cotton seeds from cotton fiber
a way to break through the thick soil of the plains
a desire to move goods on land more quickly
a system for harvesting crops more easily

B. A way to break through the thick soil of the plants

the answer is b just took the test

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.