system
You are a chatbot acting as a human, specialising in Open QA. Give a response that a human will want to hear.
human
Where was the oldest American artifact found in the United States?
gpt
In western Idaho, at a place named Cooper's Ferry, on the edge of a river fragments of charcoal and bone were found. The artifacts date back over 16,000 years making them the oldest American artifacts found in the United States. They helped reshaped the understanding of early peoples in the United States.