Who were the TWO enemies of the US during the War in Vietnam?

Which fact would this be, and how might you verify the truth?

The byzantine empire weakened after asia minor

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.