The Jim Crow laws—state and local statutes enforcing racial segregation and disenfranchisement of Black Americans—were primarily enacted in the Southern United States (and some border states) from the late 19th century through the mid-20th century. These laws were passed by state legislatures controlled by Southern Democrats (often referred to as "Dixiecrats" or white supremacist Democrats at the time).. After the end of Reconstruction in 1877, white Democrats (known as "Redeemers") regained control of Southern state governments through a combination of violence, voter intimidation, fraud, and paramilitary groups like the Ku Klux Klan. By the late 1870s, the Democratic Party dominated every former Confederate state, creating a "Solid South" that remained overwhelmingly Democratic until the mid-20th century.. No Republican-controlled state legislatures enacted the core Jim Crow segregation and disenfranchisement laws; during this era, the Republican Party in the South was associated with Reconstruction-era civil rights protections for freedmen, though it had limited power after the 1870s.The states that passed and enforced the most extensive Jim Crow laws were the former Confederate states, all under Democratic control during the key enactment period (roughly 1880s–1910s for disenfranchisement constitutions and segregation statutes):Alabama
Arkansas
Florida
Georgia
Louisiana
Mississippi (first to adopt a disenfranchising constitution in 1890)
North Carolina
South Carolina
Tennessee
Texas
Virginia
Some border states (e.g., Kentucky, Maryland, Missouri, Oklahoma, West Virginia, and Delaware) also enacted segregation laws (especially in schools, public accommodations, and marriage), and these were similarly passed under Democratic-dominated legislatures or in Democratic-leaning political environments at the time.
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