James k. polk initiated a war with mexico in order to do what?

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 national security act of 1947 reflected:

How long have counties been a part of the government structure of the united states?