Jimmy Carter served in the Georgia Senate from 1963-1967. He would have been MOST likely to have dealt with desegregation as a Georgia Senator:
B) Desegregation
Post the 1954 Brown v Board of Education (Supreme Court case wherein separate public schools for blacks and whites were found to be unconstitutional) case, racial tensions were high. Carter was a proponent of integration and often spoke in favor of the cause.
