N'afọ 1965, Mississippi nwere ọnụ ọgụgụ kachasị elu nke ndị isi ojii na 74% ma duru mba ahụ n'ọnụ ọgụgụ ndị isi ojii a họpụtara. Na 1969, Tennessee nwere 92.1% nke ndị isi ojii; Arkansas, 77.9%; na Texas, 73.1%. Ajụjụ: Olee steeti nwere ndị isi ojii kachasị na 1965?
Mississippi