The battle of concord led directly to which of the following events?
the election of washington as president
the defeat of cornwallis at yorktown
the victory of the revolutionaries at trenton
the siege against british troops at boston

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