A federal law bay be ruled unconstitutional when: A. Two thirds of the state legislature vote against it. B. Supreme court declares it unconstitutional C. The president vetoes it D. A majority of state governor's veto it.

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