Answer :
On April 25, 1898 the United States declared war on Spain following the sinking of theBattleship Maine in Havana harbor on February 15, 1898. The war ended with the signing of the Treaty of Paris on December 10, 1898.
Answer:
B. the explosion of the American battleship in Maine
Explanation:
A. exposure of a Spaniard's letter about President McKinley
B. the explosion of the American battleship in Maine
C. the harsh treatment of Cubans by General Weyler
D. capturing of the San Juan hill by the Rough Riders