Write NO MORE THAN TWO WORDS for each answer.
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Chewing Gum: Key events |
|
| Who | Why they chewed gum |
| (33) | - for enjoyment and relieving toothaches. |
| Ancient Mayans | - to satisfy (34) or combat hunger |
| Aztecs |
Married women and widows - to use it in private as a (35) freshener Men - to clean their teeth, but only in secret. |
| North American Indians |
(Note: European (36) adopted this indigenous custom of chewing on spruce tree resin) - to improve oral hygiene |
Write NO MORE THAN ONE WORD for each answer.
John Curtis developed the first commercial spruce tree gum in the late 1840s.
The recipe was later changed to make the chewing gum (37).
By the mid-1900s, (38) ingredients were being used instead of chicle.
William Wrigley Junior offered store owners (39) to stock his products.
In 1906, Frank Fleer's first attempt to make bubble gum failed. Years later, the first (40) bubble gum was introduced.
Résumé des scores 
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