Zipcodes are essential for several reasons. First, they allow the United States Postal Service (USPS) to route mail and packages quickly. They have also been used to stratify data and divide people into groups,
After the United States abolished slavery, Black Americans continued to be marginalized through Jim Crow laws and diminished access to facilities, housing, education—and opportunities.
United States - Railroads, Highways, Airports: The Constitution of the United States, written to redress the deficiencies of the country's first constitution, the Articles of Confederation (1781–89), defines a federal system of government in which certa