Answer
Europe was not the only one that positively affected by Marco Polo's travels. Unsurprisingly, China, too, was affected in a positive manner. Marco Polo had introduced gunpowder to the Chinese. ... With trade between Europe and China, the Europeans were introduced to citrus fruits, spices, and other newly seen goods.
I believe it's only white, land owning males.
Answer: Both
Explanation:
Both because they need to know how plants affect erosion
It caused more jobs to open up