Which statement best explains what needed to happen for the constitution to take effect? a. it had to be ratified by all 13 statesb. it had to be ratified by at least nine statesc. it had to be accepted by all of the delegatesd. it had to be approved by george washington

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.