USA HISTORY

Detailed explanation-1: -Under President Woodrow Wilson, the United States remained neutral until 1917 and then entered the war on the side of the Allied powers (the United Kingdom, France, and Russia).

Detailed explanation-2: -In World War II, the three great Allied powers-Great Britain, the United States, and the Soviet Union-formed a Grand Alliance that was the key to victory.

Detailed explanation-3: -The military alliance that fought against the Central Powers was known as the Allies. Initially this alliance was based around the four great powers of Russia, France, Japan and the British Empire, along with the smaller states of Serbia, Montenegro and Belgium that also went to war in 1914.

Detailed explanation-4: -Germany’s resumption of submarine attacks on passenger and merchant ships in 1917 became the primary motivation behind Wilson’s decision to lead the United States into World War I.

Detailed explanation-5: -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).