Answer:
Tractors could turn soil, pull loads and speed harvests -- and they could do it better. More tractors meant fewer horses and mules. ... So, tractors replaced horses and mules. As a result, farmers no longer needed to raise crops to feed work animals.
Explanation:
B, Had a complex society with separate settlements and different rulers.
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77.1% chance that the answer is making friends with foreign countries.
The answer is A
The right was passed by Congress on June 4 1919.