President franklin d roosevelt said the united states needed to become the great arsenal of democracy mainly because he was trying to
a- increase the number of supreme court justices
b- assist the allied nations
c- limit the influence of the defense industry
d- gain public support for a third term

What is the columbian exchange? o a. the changes that resulted from europeans settling in the new world b. the relationships that columbus and his men had with the natives they met o c. the ships that columbus bought with money from the king and queen of spain o d. the increase in the number of native american towns in the new world