Below you can find the Until the mid-19th century americans chewed spruce resin or this waxy substance Jeopardy Words Answer. The answer to Until the mid-19th century americans chewed spruce resin or this waxy substance has 8 letters. This clue belongs to the Gum category and is part of Jeopardy Word Level 1720. If you scroll near the bottom you will find other clues and answers part of level 1720