6. Missouri, Kentucky. Maryland, and Delaware all had slaves. Yet those states do not appear on the cotton-production map. Explain what this means.

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.