They taught literacy to enable blacks to pass voting tests.. 
Mẹtalọidi únjẹ lílò ninu Kemistri lati fi se iṣeto awọn elimẹ́ńtì kẹ́míkà.Ìtọ́kasíàwọn ẹgbẹ Elimẹ́ńtì kẹ́míkàtabili idasiko awọn elimẹ́ńtì.. 