Which article proclaims the constitution as the highest law

Which passage from the gettysburg address best supports the central idea that freedom is worth the struggle

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.

The eastern roman empire is also known as what empire