For the majority of human history, North America’s population was entirely Indigenous in its character. Then in the early 1600s the Europeans began to establish colonies along the Atlantic coast. These settlements became gateways through which millions of people would eventually flow west, creating incessant demand for new land. However, these foreigners were not the only migrants creating chaos as they claimed new homes across North America. Nations like the Ojibwe and Lakota were already on the move. Their migration created a domino effect which provoked conflict and cultural change, as peoples who already called the west home fought to defend their territory. From the Atlantic to the Pacific, the wars created by mass migration would transform North America into the continent we know today.