What was the purpose of the protective tariff on european goods after the war of 1812?

What effect did the process of urbanization in europe have on the economies of europe? and what document would support the answer?

Who was marshall mcluhan and what did he have to do with communication theory?

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.