The airbib empire is the answe
I don’t understand what you are saying
The south didn't grow crops very much, instead they grew cotton which made them rely on the North for crops and other materials. So the correct answer would be "B" since that seems like the most plausible answer.
In short, Germany was close to being defeated, and America wanted to be part of the post war carve up (when territory was divided). The US was supplying war materials to the Allies and could not do so while maintaining complete neutrality. There was also the sinking of the British ship Lusitania which angered the US. Also, the Zimmerman telegram.