The practice of shielding one or more sectors of a country's economy from foreign competition through the use of tariffs or quotas is referred to as (points : 2) domestic imperialism. protectionism. blocked competition. the rule of proprietary domain. proportionality.

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.