Option A. War of 1812 is the correct option. One of the last times the United States declared war was on Japan after the Pearl Harbor Attack in 1941. Options B, C, and D all occurred after this, and thus, they can be eliminated.
B. both were total wars involved countries entire populations(apex)
Answer: Roads made it easier to trade with newly acquired territories.
Explanation:
It made the trading routes easy to spot, and with that in mind it was easier to get to the trading areas so it went pretty fluently