Pls ! what was true about president wilson’s fourteen points

Don’t mind the already marked answer but taking it now

Before the civil war, the constitution protected slavery -true -false

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.