WWI was fought and won on the allied side by France, the UK and the US (as a late entry) together. The allies finally won because the Germans simply couldn't keep up the war effort and could no longer replace their battle-fatigued troops or the arms and other materials lost or destroyed in battle. Their troops had already been forced to steadily retreat in the months before the Armistice.
The US entry was a decisive factor in that it solved the problems that the Allies too had been having in replacing troops and equipment.
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The Allied powers - USSR, as well as United States, Britain, France, Canada, Poland and many other smaller nations won the Second World War.
The spiders won world war 2 and it ended 10 trilion years ago
The union (aka the north) won.
The allies were successful in the Battle of Britain.
World War I was a WORLD war, it involved most of the world's great powers and more than 2 countries. It was fought by two opposing alliances: the Allies (United Kingdom, France, and the Russian Empire, Belgium, Serbia, Italy, Japan, Greece, Romania and the United States) against the Central Powers (Germany, Hungary, Turkey and Bulgaria). The winners were the Allies. The Allied Powers of World War I won. World War I was won by an alliance called several different things. Among those names are The Allied Powers, The Entente Powers and The Triple Entente. The primary members of this alliance included France, Russia, Britain, Italy, and the United States. Philosophically wars do not have winners, as everyone suffers some loss. However, the United States, Great Britain and France most definitely won the 1st World War. They imposed very dire consequences on Germany.