The short answer is: to stop black people from voting.
In late 1800 black people were already allowed to vote (black men only) but in the South, racism was still prevalent and in order to stop black people from voting, the while people in power came up with a number of additional requirements, such as having a grandfather that was allowed to vote, which many black people could not prove they had.
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Abraham Lincoln
Abraham Lincoln had conceived the reconstruction process and was poised for a show- down with congress before his assassination. His predecessor and vice-President took over the reconstruction but did not heed congress in its implementation which leads to contemporary arguments that he implemented his own fashion of presidential reconstruction.
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was adopted by the United States Congress of the Confederation on May 20, 1785. It set up a standardized system whereby settlers could purchase title to farmland in the undeveloped west. Congress at the time did not have the power to raise revenue by direct taxation, so land sales provided an important revenue stream. The Ordinance set up a survey system that eventually covered over three-fourths of the area of the continental United States.[1]
Because the what more land to see the were greedy and the would take land from the Indian
Basically, the normal citizen wanted the federal government to take care of their menial societal problems, such as infrastructure like parks and roads, maintaining safety, their welfares, etc.
But the business people tend to think in a higher state. They wanted the government to create regulations that would bring more profit for their business in the future
hope this helps