The main countries in the Allied powers of World War II were the Soviet Union, the United Kingdom, France and the United States. There were several other countries that fought alongside the Allied Powers, but these countries were the major belligerents and provided the vast majority of Allied troops.Know More
The United Kingdom and France first declared war on Germany on Sept. 1, 1939, after Hitler's invasion of Poland. Despite repeated warnings that Germany's actions were in violation of the Treaty of Versailles, Germany continued expanding its territory until the United Kingdom and France declared war. In 1940, Germany's assaults removed France from the major conflict.
Meanwhile, Germany and the Soviet Union had come to an agreement known as the Molotov-Ribbentrop Pact, which stated that neither side would attack the other and the countries would divide Poland between them. Germany broke this agreement in June of 1941, causing the Soviet Union to side with the Allies.
During this time, the United States had maintained an attitude of neutrality. The Japanese Empire was expanding its holdings in the Pacific and wanted to keep the United States from being able to stop it. Therefore, the Japanese military launched an attack on Pearl Harbor on Dec. 7, 1941. On December 8, the United States entered the war in response on the side of the Allies.Learn more about World War 1
During World War I, Germany, Austria and the other countries in the Ottoman Empire formed the Central Powers and fought against the Allied Powers, which consisted of Russia, Japan, Great Britain, Italy and France. The war began following the unexpected assassination of Austria's Archduke Ferdinand.Full Answer >
The majority of Americans felt that the United States should stay out of World War I because it was not a signatory to any of the agreements that had lured the European powers into conflict across the continent, so President Woodrow Wilson declared a neutrality policy, attempting instead to broker a peace agreement. Even when a German sub sank the British ocean liner Lusitania in 1915, with 128 Americans on board, the United States demanded a stop to the destruction of passenger ships, and Germany agreed, leading to continued American neutrality.Full Answer >
In World War I, Germany declared war on France as part of a long-held strategy called the Schlieffen Plan. The Schlieffen Plan required German troops to organize on the frontier of Belgium, a neutral country, with the idea to invade France.Full Answer >
The major combatants in World War I were the Central Powers of Germany, Austria-Hungary, Bulgaria and the Ottoman Empire versus the Allied Forces of Great Britain, France, the United States, Russia, Italy and Japan. In addition, nearly 20 other countries and several colonies joined the conflict.Full Answer >