C
The Union strategy to win the war did not emerge all at once. By 1863, however, the Northern military plan consisted of five major goals: Fully blockade all Southern coasts. This strategy, known as the Anaconda Plan, would eliminate the possibility of Confederate help from abroad.
Apparently, all of the names on the map are Irish, so the map suggests that Irish immigrants may take over the United States by the 1900s.
You may well be right about people's fears that immigrants, lots of them from Ireland, would overrun the country. Look up when the potato famine was, though. The map may be from the early 1900s, but, if so, not about the potato famine in Ireland.
B. American leaders feared Japan would never surrender without horrific losses.
Assembly line I believe is the right answer hope it helps!