(A) The Cubans
(B) ** An an accidental fire
(C) The Spanish
(D) A sparkly torpedo
EXPLANATIONS BELOW
Concept note-1: -An official U.S. Naval Court of Inquiry ruled in March that the ship was blown up by a mine, without directly placing the blame on Spain. Much of Congress and a majority of the American public expressed little doubt that Spain was responsible and called for a declaration of war.
Concept note-2: -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-3: -USS Maine entering Havana harbour, January 1898At 9.40pm on the night of 15 February 1898 the United States battleship Maine, riding quietly at anchor in Havana harbour, was suddenly blown up, apparently by a mine, in an explosion which tore her bottom out and sank her, killing 260 officers and men on board.