How does being an island near many canals them trade?

Being an island near many canals helped them trade by making transport the easiest and the cheapest.

Explanation:

Venice is a settlement in Italy of about 118 small distinct islands separated by canals and joined together by about 400 small and large bridges. The transport between these islands happens mostly through the canals as it is the most convenient mode of going back and forth between the islands. The aesthetic appearance and the setting of the islands fetches tourists from across the world giving additional boom to the trade.

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