Answer:
Explanation:
Washington argued that African Americans must concentrate on educating themselves, learning useful trades, and investing in their own businesses. Hard work, economic progress, and merit, he believed, would prove to whites the value of blacks to the American economy.
There were not paid the same wages in job markets
Large numbers of women were recruited into jobs vacated by men who had gone to fight in the war. ... The high demand for weapons resulted in the munitions factories becoming the largest single employer of women during 1918.
<span>Kepler's laws of motion helped overturn the earlier Aristotelian astronomical system which believed that the sun and planets revolved around the Earth. In order for the older system to work, a complicated mechanism known as "epicycles" was required to make the visible motions match the theory.</span>