sentences:  In 1918, acting as private assistant to aging Italian Prime Minister Vittorio Emanuele Orlando, played a noted role in the negotiation of the Treaty of Versailles.Ambrosini escaped having to align himself with the ideology of fascism first by teaching colonial law and then by conducting extensive milestone studies on foreign federalism and abstract electoral systems.After the end of World War II, in 1946, Ambrosini was elected to the Constitutional Assembly and a key participant of the 18-member committee credited with the actual drafting of the Italian Constitution.