What do historians do when using the historical thinking skill of analyzing historical sources

N1947, the united nations create a country

What mountain range is located near 60*n and 60*e

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.