Answer:
slavery was when white people were in control of black people and made them work in a condition compared to that of a slave in respect of exhausting labor or restricted freedom. whereas jim crow was the era when white people looked down on blacks and discriminated against blacks because the had freedom.
Explanation:
sorry i don't have an explanation
He made the assembly line greatly improving work methods.
Longevity of the individual is increasing in the given cultures
<u>Explanation:
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The research report in the publication reveals that the average age of human beings has been extended from the prescribed longevity. Genetically the longevity of human beings is calculated according to region and their habitation.
Due to the medical revolution and invention of medical equipment has given the salvation for diseases which were not in the olden days. Because of the medicines and medical support gadgets, longevity is extended. Due to this extended life bone of the 90% of old age people got affected by osteoporosis in which bone density becomes very fragile.
B or A would be your answer. (If I am incorrect I am sincerely sorry ;-; but both seem to be in the area of Nationalism)