B would be the answer because they were mapping the Mississippi river.
Because the colonists suffered persecution for their religious beliefs.
To travel from coast to coast it would take 10 days.
To help save money for the military
segrogation. "The 1920s was a decade of change, when many Americans owned cars, radios, and .... Yet segregation, or separation of the races, continued to be practiced in North ... Modern civil rights laws for minorities were still many years away."- NC Pedia