I think the answer is Urban Sprawl, because when that happens, trees are cut down to make room for cities/towns, and when trees are cut down there is less of a chance for wildfires.
From the graph that we have here, the event that is responsible for this change is A product becomes less popular and fewer customers purchase it.
The reason this is the answer is because when e look at the graph closely, we can see that only demand fell from 50 to 40. There was no change in price, it remained at 15 dollars.
A fall in demand even at the same price that a good was sold previously shows us that less people are buying the product. This could be due to changing consumer preference.
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It was important because it supported the Hanseatic trade route in the Baltik and the canal needed to be built between major trading cities. This was one of the great examples of co operation across borders in the North Europe in the area of free trade.
Answer: willam h harrison
Explanation: