(A) France
(B) Germany
(C) ** Great Britain
(D) Russia
EXPLANATIONS BELOW
Concept note-1: -Europe Goes to War Beginning July 28, 1914 with Austria-Hungary declaring war on Serbia in retaliation for the assassination of Archduke Franz Ferdinand, a complicated web of alliances plunges the nations of Europe into war within a month. The United States stays politically neutral.
Concept note-2: -The Allies, or the Entente powers, were an international military coalition of countries led by the United Kingdom, France, Russia, Italy, Japan, and the United States against the Central Powers of Germany, Austria-Hungary, the Ottoman Empire, Bulgaria during the First World War (1914–1918).
Concept note-3: -On April 6, 1917, the U.S. joined its allies–Britain, France, and Russia–to fight in World War I. Under the command of Major General John J. Pershing, more than 2 million U.S. soldiers fought on battlefields in France. Many Americans were not in favor of the U.S. entering the war and wanted to remain neutral.
Concept note-4: -The United States has no closer ally than the United Kingdom, and British foreign policy emphasizes close coordination with the United States. Bilateral cooperation reflects the common language, ideals, and democratic practices of the two nations.