Final answer:
In the American Midwest, native seed crops like goosefoot, sumpweed, and sunflowers were farmed around 6,000-1,000 yBP.
Step-by-step explanation:
The native seed crops goosefoot, sumpweed, and sunflowers were farmed in the American Midwest around 6,000-1,000 years before present (yBP).
According to historical evidence, people in the Eastern Woodlands region had been experimenting with these edible plants for thousands of years. They started by cultivating wild plants like goosefoot and sunflowers, and later made concerted efforts to increase their food supply by clearing land and more carefully cultivating these plants.
It is important to note that the cultivation of these crops varied in different regions and timelines. For example, maize (corn) cultivation in central Mexico began around 5,000 years ago, while potatoes were grown in Peru about 7,000 years ago.