In America the demand was especially strong, in Massachusetts large factories turned out a multitude of ivory piano keys, hairclips, knife handles and billiard balls.
Nchini Marekani mahitaji yalikuwa hasa makubwa, Massachusetts, viwanda vikubwa vilitengeneza marundo makubwa ya funguo za piano, vibanio vya nywele, mipini ya visu na mipira ya billiard.