(A) America annexing Hawaii
(B) Spain annexing Puerto Rico
(C) ** Cuban people being placed into concentration camps
(D) ** The U.S.S. Maine sinking
EXPLANATIONS BELOW
Concept note-1: -On February 15, 1898, an explosion of unknown origin sank the battleship U.S.S. Maine in the Havana, Cuba harbor, killing 266 of the 354 crew members. The sinking of the Maine incited United States’ passions against Spain, eventually leading to a naval blockade of Cuba and a declaration of war.
Concept note-2: -On April 25, 1898 the United States declared war on Spain following the sinking of the Battleship Maine in Havana harbor on February 15, 1898.
Concept note-3: -President William McKinley sends the battleship USS Maine to Havana to protect U.S. interests in Cuba. The Maine explodes in Havana Harbor, killing 266 men. An inquiry conducted by the U.S Navy concludes that the explosion was caused by the detonation of a mine under the ship.