Woodrow Wilson (USA) George Clemenceau (France) David Lloyd George (Great Britain)
These men were the main allied leaders at the Paris peace conference. They were originally the big four when Vittoro Orlando was part of the allies but, he ended up leaving when he did not get the land he was promised.
The big three were the decision makers at the conference
They were also the leading men in the treaty of Versailles, treaty of St. German, Treaty of Neuilly, Treaty of Trianon and, the Treaty of Sevres
Summary
The Big three consisted of Woodrow Wilson (USA), George Clemenceau (France), David Lloyd George (Great Britain). Before the big three became the big three they used to be known as the big four. The big four consisted of France, Britain, U.S., Italy. The purpose of the big 3 was to make decisions at the Paris Peace Conference.