Answer:
There was a trade-related impact; the increase of global trade had an enormous effect on the Old and New World.
Answer:
The most likely answer is the third option
Explanation:
it's not option one because you don't need surplus to be a civilization.
it's not option two because a surplus of food isn't just crops.
it's not option four because people still need to trade for other resources.
In conclusion, the most reasonable answer is option three.
