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Tooth imprints were found on 5,000 year -old chewing gum in Finland.
It was made from birch bark tar and was believed to have antiseptic properties.
The commercialization of this product took place mainly in the United States where American Indians were observed to chew resin made from sap of spruce trees.
John B. Curtis developed and sold the first chewing gum called “ the State of Maine Pure Spruce Gum” in 1948.
WORDS
imprint: a mark on something.
resin: a sticky substance that is made by some trees.
sap: a liquid that carries food inside of a plant.
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