Answer :
The increase in he spread of diseases was a major negative consequence of the Commercial Revolution of the Late Middle Ages.
Therefore option B is correct
What was the Commercial revolution?
Commercial Revolution was the rapid increase in commerce in Europe that began in the late Middle Ages. It received stimulus from the voyages of exploration and immigration.
One major event that propelled the commercial revolution was the Crusades. Europeans discovered spices, silks, and other commodities rare in Europe. This development created a new desire for trade, and trade expanded in the second half of the Middle Ages
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