Which product feuled the demand for furs in Europe early 1600s?

The product that fueled the demand for furs in Europe during the early 1600s was beaver. Beaver pelts were highly valued for their dense and luxurious fur, which was used to make hats and other fashionable garments. The demand for beaver furs led to an intense beaver trapping and hunting industry, particularly in North America, where beavers were abundant. This demand played a significant role in shaping the early colonial history and economy of North America.