For which of the following events are there no primary sources of information?

A. U. S. victory at Iwo Jima
B. the extinction of the dinosaurs
C. the U. S. civil war
D. man landing on the moon

B hope this helps

Explanation:

the tariff was created to protect industry in the northern part of the united states. industries in the north were being driven out of business by imported goods that were priced at a low rate. the goal was to protect these industries   by taxing the goods.