Friction and mass would be the correct answers
Answer:
A) It allowed for a sharp increase in cotton production.
Explanation:
Because the process of cleaning and processing fibers was quickened, cotton was thus produced faster.
Answer:
Explanation:
Between 1940 and 1960 over 3,348,000 blacks left the south for northern and western cities. The economic motivations for migration were a combination of the desire to escape oppressive economic conditions in the south and the promise of greater prosperity in the north.
