The fact that Bengal was a major center of trade for both maritime and overland routes.
The variety of commodities that were traded, including textiles, spices, horses, and grains.
The impact that trade had on the economy and culture of Bengal, both in terms of the introduction of new goods and ideas, and the growth of urban centers.
I would recommend this blog post to anyone who is interested in learning more about the history of trade in ancient Bengal. It is a well-written and informative resource that provides a good overview of this topic.