Native Americans grew was squash<span>. Others early crops included </span>cotton<span>, </span>sunflower<span>, </span>pumpkins<span>, </span>tobacco<span>, </span>goosefoot<span>, </span>knotgrass<span>, and </span>sump weed.<span>The majority of Native American tribes did practice some form of slavery before the European introduction of African slavery into North America, but none exploited slave labor on a large scale. In addition, Native Americans did not buy and sell captives in the pre-colonial era, although they sometimes exchanged enslaved individuals with other tribes in peace gestures or in exchange for their own members. How do u not know bout native americans?</span>
Native Americans in the United States<span> fall into a number of distinct ethno-linguistic and territorial phyla, whose only uniting characteristic is that they were in a stage of either </span>Mesolithic<span> (</span>hunter-gatherer<span>) or </span>Neolithic<span> (subsistence farming) culture at the time of European contact.</span>
J. Robert Oppenheimer is often called the "father of the atomic bomb" for leading the Manhattan Project, the program that developed the first nuclear weapon during World War II.
