The Santee migrated north and westward from the south and east into Ohio then to Minnesota. Some came up from the Santee River and Lake Marion, area of South Carolina which takes its name from them and where some of their ancient mounds can still be seen along the portion of the dammed-up river that forms Lake Marion. In the past, they were a woodland people who thrived on hunting, fishing and subsistence farming. Migrations of Anishinaabe/Chippewa (Ojibwa) people from the east in the 17th and 18th centuries, with muskets supplied by the French and British, pushed the Dakota further into Minnesota and west and southward, giving the name "Dakota Territory" to the northern expanse west of the Mississippi River and up to its headwaters.