Because President Lincoln Was a fairly good president. Losing a president. The nation will lose control due to others taking over the spot and possibly ruining everything President Lincoln worked for. Plus He was the first ever president to ever be Assassinated in U.S. History. I would be just as scared knowing how easy it is for a president to be assassinated
The Zimmerman Note was a note sent from Germany to Mexico asking Mexico to align itself with German interests. If the US entered the war and if Mexico opposed the US, the reward would be Arizona California and one other state -- perhaps Texas. It was a major contributor to the declaration of war on Germany by America.
The sinking of the Lusitania was another major event. When the Lusitania was sunk, 2000 people were affected.
Submarine warfare really aggravated the US. Many merchant ships were sunk.
Answer: B
Improve society and address economic problems