A concordat signed in 1929 in the Lateran Palace between the kingdom of Italy (represented by Mussolini) and the Holy See (represented by Pope Pius XI), which recognized the papal state under the name Vatican City as fully sovereign and independent.
Definition of Lateran Treaty in US English:
Lateran Treaty
proper noun
A concordat signed in 1929 in the Lateran Palace between the kingdom of Italy (represented by Mussolini) and the Holy See (represented by Pope Pius XI ), which recognized the papal state as fully sovereign and independent under the name Vatican City.