The Pittsburgh Agreement was a memorandum of understanding completed on 31 May 1918 between members of Czech and Slovak expatriate communities in the United States of America. It is named for the city of Pittsburgh, Pennsylvania, where the agreement was made. The agreement prescribed the intent of the cosignatories to create an independent Czechoslovakia. This was achieved on 18 October 1918, when the primary author of the agreement, Tomáš Garrigue Masaryk, declared the independence of Czechoslovakia. Masaryk was elected the first president of Czechoslovakia in November, 1918.