Answer: the Louisiana purchase
Explanation:
Bantu tribes stopped their migrations in the areas of Zimbabwe and "South Africa," due mostly to the fact that South Africa lies at the very end of Africa.
The new approach was pushing native Indians into reserves.
The reservations often very visible in the western territories were part of the treaty arrangements that were intended to end constant hostility between the native Indians and settlers pushing westwards.
Answer:
Farming and cultivating the land.
