The correct answer is - natural selection.
This is a typical case of natural selection, where we have a group of people that have similar physical traits, that are selected and than isolated from any external influence, so with interbreeding they manage to keep their physical traits for generations to come and thus create a population that resembles their initial ancestors.
B because the natives were moved and the American government bought the land from the french for 60 million french francs that would be billions in today’s money
SUBURBANIZATION<span> describes the general trend of city dwellers to move from the city into residential areas in ever-growing concentric circles away from the city's core.
</span><span>Postwar suburbanization was the result of a complex web of governmental and economic conditions that scholars have yet to adequately explore. One of the most important of these factors is also one of the most overlooked: the anxiety-filled onset of the Cold War.
Though frequently cited in passing as an influence on certain aspects of suburbanization, the Cold War is rarely given the serious and microscopic treatment it deserves. It is understandable why historians and urbanists would shy away from a topic as complex as the war, about which much has been written outside a suburban context. </span>
The Louisiana Purchase, which was purchased by the United States from France, greatly impacted the development of the US in that it gave the US a large area of land for extremely cheap.