Why did the us civil war break out?

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.

In 1819, what did the united states obtain from spain for $5 million?

Which of the following was a typical tactic of nativists in the late 1900?