The mexican-american war contributed to all of the following, except: a) the strengthening of the union. b) the united states becoming a transcontinental nation. c) the end of a prolonged depression d). the creation of the department of the interior. e) a dramatic expansion of the federal government.

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