Answer:
D. New diseases were introduced.
Explanation:
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One of the main ways in which Europe’s commercial revolution affected social structure is that it increased the incomes of many lower-class citizens, which created somewhat of a "middle class," which had previously not existed.
The reason is that there is a water shortage happening there. They needed to conserve water and be supplied from sources. Right now there are strict
"After President Nixon ordered the U.S. military to stop spraying Agent Orange in 1970, this is the site where all the Agent Orange barrels remaining in Vietnam were collected. ... Based on their research, Olson and Wright Morton recommend incineration of contaminated soils and sediments at the Vietnam airbase hotspots.
