The Battle of Grand Gulf was fought on April 29, 1863, during th: Modern English, sometimes described as the first global lingua franca,[59][118] is also regarded as the first world language.[119][120] English is the world's most widely used language in newspaper publishing, book publishing, international telecommunications, scientific publishing, international trade, mass entertainment, and diplomacy.[120] English is, by international treaty, the basis for the required controlled natural languages[121] Seaspeak and Airspeak, used as international languages of seafaring[122] and aviation.[123] English used to have parity with French and German in scientific research, but now it dominates that field.[124] It achieved parity with French as a language of diplomacy at the Treaty of Versailles negotiations in 1919.[125] By the time of the foundation of the United Nations at the end of World War II, English had become pre-eminent[126] and is now the main worldwide language of diplomacy and international relations.[127] It is one of six official languages of the United Nations.[128] Many other worldwide international organisations, including the International Olympic Committee, specify English as a working language or official language of the organisation.