(A) ** pacific and Atlantic ocean
(B) Cuba
(C) Monroe Doctrine
(D) Guantanamo baaay
EXPLANATIONS BELOW
Concept note-1: -The main theatres of combat in the Spanish-American War were the Philippines and Cuba. Fighting centred on Manila, where U.S. Commodore George Dewey destroyed the Spanish Pacific fleet at the Battle of Manila Bay (May 1, 1898), and on Santiago de Cuba, which fell to U.S. forces after hard fighting in July.
Concept note-2: -In response, Spain severed diplomatic relations with the United States on April 21. On the same day, the United States Navy began a blockade of Cuba. Both sides declared war; neither had allies. The 10-week war was fought in both the Caribbean and the Pacific.
Concept note-3: -The war was fought on two fronts-in the Caribbean and in the Philippines.