Native Americans in the United States fall into a number of distinct ethno-linguistic and territorial phyla, whose only uniting characeristic is that they were in a stage of either Mesolithic (hunter-gatherer) or Neolithic (subsistence farming) culture at the time of European contact.
They can be classified as belonging to a number of large cultural areas:
<span>Continental US</span>
I believe the answer is: <span>formal operational
During </span>formal operational stage, most people would started to develop the ability to develop abstract concept which granted us the ability to create a hypothesis. On average, <span>formal operational stage happen when we're around 12 years old or older.</span>
