Assertion: maple syrup's sugar | /r/ObjectUse | used for barter
Facets:
value: in the mid 1600s
type: TEMPORAL
value: by indians
type: OTHER
Source sentences:
text: While it's not known who first learned how to make sugar from the sap of maple trees, it is known that in the mid 1600s maple syrup and sugar were used for barter by Indians living near the Great Lakes and along the St. Lawrence River.