European League for Economic Cooperation was created in 1946.
Economic League - Netherlands - was created in 1917.
European Bridge League was created in 1947.
CERH European League was created in 1965.
European Volleyball League was created in 2004.
Economic League - United Kingdom - was created in 1919.
Central European Football League was created in 2005.
Eastern European Hockey League was created in 1995.
European League of Stuttering Associations was created in 1990.
European Champions League - table tennis - was created in 1988.
Rugby League European Federation was created on 2009-06-30.
Hansa was a medieval league of merchant cities in northern Europe, primarily Germany. It was formed as a means of mutually beneficial economic cooperation and provided for the security of trade routes.
The Hanseatic League was created as a commercial and defensive alliance of northern European trading cities in the late Middle Ages for mutual protection and to promote trade and economic interests in the region. It allowed member cities to cooperate in establishing trading routes, negotiating trade agreements, and providing protection for merchants traveling in unfamiliar territories.