Final answer:
Potatoes were carried west across the Atlantic as part of the Colombian Exchange, along with other plants like maize, tobacco, and sugarcane.
Step-by-step explanation:
The Colombian Exchange was a significant transfer of plants, animals, and diseases between Europe and the Americas that took place during the 15th and 16th centuries. One of the main plant products that crossed the Atlantic as part of this exchange was potatoes. They became a staple in European diets due to their adaptability to the northern European climate. Other plant products included maize (corn), tobacco, and sugarcane.