What was the most popular fur traded by the French in America?

Answer 1

Beaver, which lived in considerable numbers in the Great Lakes region, was a popular fur among both Native American and French trappers.

The European beaver was hunted nearly to extinction in the 19th century, but the North American beaver (Canadian beaver) was more fortunate. In 1977, as many as 500,000 beavers were legally trapped in the US and Canada, mostly to control local overpopulation.