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.
D. Im not sure not enough details to compare.
Answer:
the provincial congress was extra legislative bodies. it was out of 10/13 and some were refered to as congress