Twin or twin cities are a form of legal or social convention between cities, cities, counties, oblasts, prefectures, provinces, regions, states and even countries located in geographically and politically different areas, in order to promote cultural and commercial ties.  The modern concept of twinning, conceived after world War II in 1947, was designed to promote friendship and understanding between different cultures and between former enemies as an act of peace and reconciliation and to promote trade and tourism.  In the 2000s, twinning of cities was increasingly used to establish strategic international trade relations between member cities.   Although the term is often used synonymously, with the term "friendship city," this may mean a more limited relationship in relation to a twin city relationship, and friendship city relations are mayor-mayor agreements.  The first known twinning in Europe was 836 between Paderborn and Le Mans, France.   From 1905, Keighley, in West Yorkshire, England, had a twinning with the French communes of Suresnes and Puteaux.   The first modern twinning recorded between Keighley and Poix-du-Nord in the North, France, in 1920, after the end of the First World War.     It was originally the adoption of the French city; Formal partnership charters were not exchanged until 1986.  DAVAO CITY (MindaNews / January 17) - Davao Municipal Government officials will sign a fraternity agreement with Honolulu, Hawaii next month, said an official of the Davao City Chamber of Commerce and Industry Inc. (DCCCII).
"The sorority agreement is just a memorandum of understanding that we are open to opening up opportunities. It is only a declaration that both cities are open to exploration," he added. Cities that refine cities in partnership are sometimes made for political purposes. In 2013, the city of Gyongyus, Hungary, was associated with the Azerbaijani city of Shusha and signed the partnership agreement with representatives of the Azerbaijani government; Hungary recognized Shusha as a de jure part of Azerbaijan, although it was controlled at the time and until 2020 by the unrecognized Armenian and Artsakh armed forces.  In 2003, Preston City Councillors in England attempted to establish a partnership with the Palestinian city of Nablus in the name of solidarity.  On July 12, 2017, the Rotary Club Camp Crame, RI District 3780, signed a Sisterhood Club agreement with the Rotary Club downtown Davao, RI District 3860. The signing of the Sisterhood Agreement aims to build lasting relationships with partner clubs to strengthen cooperation for a global network of scholarships, services and businesses around the world. From the Rotary Club Camp Crame were present: TGP RAMON "CHEN" PURUGGANAN, PP Nicanor "Nick" Bartolome and PP Ernie Paranis.