Dr. Davis goes on to say: Some historians believe that a Mr. Crow owned the slave who inspired Rice's act--thus the reason for the Jim Crow term in the lyrics. In any case, Rice incorporated the skit into his minstrel act, and by the 1850s the "Jim Crow" character had become a standard part of the minstrel show scene in America. On the eve of the Civil War, the Jim Crow idea was one of many stereotypical images of black inferiority in the popular culture of the day--along with Sambos, Coons, and Zip Dandies. The word Jim Crow became a racial slur synonymous with black, colored, or Negro in the vocabulary of many whites; and by the end of the century acts of racial discrimination toward blacks were often referred to as Jim Crow laws and practices. Although "Jim Crow Cars" on some northern railroad lines--meaning segregated cars--pre-dated the Civil War, in general the Jim Crow era in American history dates from the late 1890s, when southern states began systematically to codify (or strengthen) in law and state constitutional provisions the subordinate position of African Americans in society. Most of these legal steps were aimed at separating the races in public spaces (public schools, parks, accommodations, and transportation) and preventing adult black males from exercising the right to vote. In every state of the former Confederacy, the system of legalized segregation and disfranchisement was fully in place by 1910. This system of white supremacy cut across class boundaries and re-enforced a cult of "whiteness" that predated the Civil War.