Final answer:
By 8000 B.C., people in North America began growing root crops called tubers.
Step-by-step explanation:
By 8000 B.C., people in North America began growing root crops called tubers.
The cultivation of tubers such as potatoes in North America is true. Native Americans developed certain plants, including potatoes, as staple crops. Potatoes were grown in Peru 7,000 years ago.