How did the economy of west europe change after the crusades

there was a reduction of economic power and increased power of the lower and midsle classes. increase of trade and goods and quality of life. decline of feudalism.

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explanation:

with the profits from the european sales, merchants purchased europe's manufactured  goods, including tools and weapons. then the merchants shipped those manufactured  goods, along with the  american  sugar and rum, to west africa where they were bartered for  slaves.