What likely prompted the frequent mob violence in the
South during the last decade of the 1800s?

Violence towards the African Americans

Explanation:

At the end of the 1800s, violence was growing in the South because of racial tension. White southerners blamed their financial difficulties on the freed slaves. Lynchings were displaying a common way of solving the anger that whites had with freed blacks. For the white Southern, Lynching was necessary because it controls and maintains the freed slaves. White Southerners did not want to give rights to African Americans granted by the 13th,14th, and 15th Amendment of the constitution.

worcester v. georgia, legal case in which the u.s. supreme court on march 3, 1832, held (5–1) that the states did not have the right to impose regulations on native american land. andrew jackson refused to enforce the ruling, the decision form the basis for most subsequent indian law in the united states.

these civilizations were located around fertile rivers, where they could produce an abundance of crops