What are two examples of the impact the americas had on europe during the columbian exchange

The potatoes and syphillis both came from the Americas to Europe and had a great influence there. Potatoes had a great role in combating hunger (shown by the fact that as when they were not longer there, Ireland had a famine) and syphilis has taken many people in Europe after the Columbian Exchange. 

Towns and small farms are usually for land, lakes, rivers, and seas.they also produce other food, like crops.it's also where animals are, where we get our meat.large plantations normally have forests, where crops are grown for sale. (similar to farms)plantations have larger fields of crops.our wine, sugar canes, and fruits come from plantations.