How did the national association of manufacturers, founded in 1903, try to eradicate unions altogether?

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.

¿why was jackson opposed to the bank? a short answer*

What industry was exempt from the child-labor laws passed in the factory act of 1833?