From what I personally know, Germany wasn`t originally going for Stalingrad but Caucasus oil fields, but Russian forces would not surrender.
Answer:
1.Impact of disease on animals. Besides humans, animals were also greatly impacted by the spreading of germs at the time.
2. Columbus Exchange was harsh against people who violated. Gold was the basic requirement
3. the introduction of New World crops, such as potatoes and corn, to the Old World
Explanation:
Hmm Ethinity and Race crossing my fingers :O