Which of these events is an example of a supreme court ruling overruling an existing law?
a. brown vs. the bored of education ending legalized segregation
b. the 13th amendment ending slavery
c. roe v. wade legalized abortion
d. all of the above

How did the construction of the erie canal improve transportation in the united states in the 1820s? a. the canal connected the great lakes to the mississippi river. b. the canal connected the great lakes to the ohio river. c. the canal connected the atlantic and pacific oceans. d. the canal connected the great lakes to the atlantic ocean.