Which of these is the MOST likely explanation for the information depicted in the map?
AOhio was not admitted to the Union until 1870
BPeople were migrating from southern to northern states.
CWestern expansion spread the U.S. population over a wider area.
DThe World Wars resulted in dramatic population shifts in the U.S.
AOhio was not admitted to the Union until 1870
BPeople were migrating from southern to northern states.
CWestern expansion spread the U.S. population over a wider area.
DThe World Wars resulted in dramatic population shifts in the U.S.