The first tariff law passed by the U.S. Congress, acting under the recently ratified Constitution, was the Tariff of 1789. Its purpose was to generate revenue for the federal government, and also to act as a protective barrier around domestic industries.
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By the early 20th century, most of the US textile industries had moved to the south, the industries remained in growth mode and established their center of operations in the Southeast to save on costs. North Carolina alone for instance had 177 mills in 1900. Previously, most of the textile industries were located in the northeast. At the turn of the 20th-century in the United States mills and factory conditions earned the attention of progressives, Immigrant women and children did much of the work done in factories and mills as well as the piecework performed in apartments.v
Martin Luther King Jr. was the most effective leader in African American civil rights.
What is African American civil rights?
African American activists organized the civil rights movements against inequality, lynching, and other acts of violence against black people. Their tireless efforts to fight back against systematic oppression lead to jail time, beatings, and sometimes even death. The aim of civil rights is to end segregation in public places as well as ban employment discrimination on the basis of color, religion, etc.
Martin Luther King Jr. was a nonviolent protest leader who became famous for his iconic speech "I Have a Dream." He was imprisoned nearly 
times for civil disobedience. He also won the Nobel Peace Prize at the age of 
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Lots of random acts/laws were put into place to make things hard for southern blacks. For example, literacy tests and fees to be able to vote were instituted in some states as blatant ways to stop blacks from voting.
