1790sCradle and scythe introduced; invention of cotton gin (1793); Thomas Jefferson's plow with moldboard of least resistance tested (1794)
1793Eli Whitney invents the cotton gin, which contributes to the success of cotton as a Southern cash crop
1797Charles Newbold patents first cast-iron plow
1800
1801Thomas Moore of Maryland invents the icebox refrigerator
1819Jethro Wood patents iron plow with interchangeable parts
Answer:
The answer is option C
Explanation:
The Great Migration, now and then known as the Great Northward Migration, was the development of six million African-Americans out of the country Southern United States to the urban Northeast, Midwest, and West that happened somewhere in the range of 1916 and 1970.The second critical reason for the Great Migration was the craving of dark Southerners to escape isolation, referred to metaphorically as Jim Crow. Provincial African American Southerners trusted that isolation and bigotry and bias against blacks was fundamentally less extreme in the North. The Great Migration, a long haul development of African Americans from the South to the urban North, changed Chicago and other northern urban areas somewhere in the range of 1916 and 1970. Chicago pulled in somewhat more than 500,000 of the around 7 million African Americans who left the South amid these decades.
<span>Technology has impact over all sectors, not only on consumers. If a consumer is unsatisfied and can file their complaint online or can share views as review. so that other people don't get trap.</span>