this map shows the shift in center of American population in the first two centuries of its existence which might BEST Account for this shifting trend

Advances in transportation and technology have made geography less of a limit for population distribution.
Explanation:
When the British started to settle in parts of North America the population was highly concentrated only one part of the continent. Pretty much all of the population was along the eastern coastline, and the main reason as to why the population was not distributed further into the mainland were the geographic factors. The main geographic factor that was stopping the movement of people were the Appalachian Mountains.
The population started to shift toward west though after some time. The reason for that were the advancements in technology and transportation. Having better, faster, safer, and cheaper transportation meant that the people were able to move over longer distances without any problem, and that was a big motive when it came to settle in the western lands that were free for exploitation.
Learn more about the effect of the Appalachian Mountains on the colonists https://brainly.com/question/4977910
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