<P> The Reconstruction Amendments are the Thirteenth, Fourteenth, and Fifteenth amendments to the United States Constitution, adopted between 1865 and 1870, the five years immediately following the Civil War . The last time the Constitution had been amended was with the Twelfth Amendment more than 60 years earlier in 1804 . The Reconstruction amendments were important in implementing the Reconstruction of the American South after the war . Their proponents saw them as transforming the United States from a country that was (in Abraham Lincoln's words) "half slave and half free" to one in which the constitutionally guaranteed "blessings of liberty" would be extended to the entire populace, including the former slaves and their descendants . </P> <P> The Thirteenth Amendment (proposed in 1864 and ratified in 1865) abolished slavery and involuntary servitude, except for those duly convicted of a crime . The Fourteenth Amendment (proposed in 1866 and ratified in 1868) addresses citizenship rights and equal protection of the laws for all persons . The Fifteenth Amendment (proposed in 1869 and ratified in 1870) prohibits discrimination in voting rights of citizens on the basis of "race, color, or previous condition of servitude ." This amendment did not include a specific prohibition on discrimination on the basis of sex; it took another amendment--the Nineteenth, ratified in 1920--to prohibit such discrimination explicitly . Men and women of all races, regardless of prior slavery, could vote in some states of the early United States, such as New Jersey, provided that they could meet other requirements, such as property ownership . </P> <P> These amendments were intended to guarantee freedom to former slaves and to establish and prevent discrimination in civil rights to former slaves and all citizens of the United States . The promise of these amendments was eroded by state laws and federal court decisions over the course of the 19th century . Women were prohibited by some state constitutions and laws from voting, leading to Susan B. Anthony attempting to vote in New York in the 1872 Presidential election as an act of civil disobedience . In 1876 and later, some states passed Jim Crow laws that limited the rights of African - Americans . Important Supreme Court decisions that undermined these amendments were the Slaughter - House Cases in 1873, which prevented rights guaranteed under the Fourteenth Amendment's privileges or immunities clause from being extended to rights under state law; and Plessy v. Ferguson in 1896 which originated the phrase "separate but equal" and gave federal approval to Jim Crow laws . The full benefits of the Thirteenth, Fourteenth, and Fifteenth amendments were not realized until the Supreme Court decision in Brown v. Board of Education in 1954 and laws such as the Civil Rights Act of 1964 and the Voting Rights Act of 1965 . </P> <P> The Thirteenth Amendment to the United States Constitution abolished slavery and involuntary servitude, except as punishment for a crime . It was passed by the U.S. Senate on April 8, 1864, and, after one unsuccessful vote and extensive legislative maneuvering by the Lincoln administration, the House followed suit on January 31, 1865 . The measure was swiftly ratified by all but three Union states (the exceptions were Delaware, New Jersey, and Kentucky), and by a sufficient number of border and "reconstructed" Southern states, to be ratified by December 6, 1865 . On December 18, 1865, Secretary of State William H. Seward proclaimed it to have been incorporated into the federal Constitution . It became part of the Constitution 61 years after the Twelfth Amendment . This is the longest interval between constitutional amendments to date . </P>

Why was the 14th amendment not successful in southern states during the reconstruction era
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