Which country emerged as a world power after the First World War?

America is correct answer.

Key Points

• Following World War I, the League of Nations was established. 
• This conflict ended European supremacy and established the United States as a world power.
• The Great War, generally known as World War I, began in 1914 with the assassination of Archduke Franz Ferdinand of Austria. 
• His assassination triggered a European war that lasted until 1918. 
• Germany, Austria-Hungary, Bulgaria, and the Ottoman Empire (the Central Powers) battled against the United Kingdom, France, Russia, Italy, Romania, Canada, Japan, and the United States (the Allied Powers) over a four-year period.

Additional Information

• China is an East Asian country. It is the most populous of all Asian countries. It occupies almost one-fourth of the Earth's surface area and is nearly as vast as the entire continent of Europe, occupying nearly the entire East Asian mainland. 
• China is also one of the world's most populous countries, rivaled only by India, which, according to UN predictions, will exceed it in population in 2023.
• Russia is a country that spans most of eastern Europe and northern Asia. 
• Russia, once the foremost republic of the Union of Soviet Socialist Republics (U.S.S.R.; colloquially known as the Soviet Union), became an independent country after the Soviet Union disintegrated in December 1991.