The Treaty of Managua was an 1860 agreement between Great Britain

Great Britain

Great Britain or Britain is an island situated to the northwest of Continental Europe. It is the ninth largest island in the world, and the largest European island, as well as the largest of the British Isles...

 and Nicaragua

Nicaragua

Nicaragua is the largest country in the Central American American isthmus, bordered by Honduras to the north and Costa Rica to the south. The country is situated between 11 and 14 degrees north of the Equator in the Northern Hemisphere, which places it entirely within the tropics. The Pacific Ocean...

, in which Britain recognized Nicaraguan sovereignty over its present national territory, but reserved, on the basis of historical rights, a self governing enclave for the Miskito, an indigenous group in the area, citing earlier treaty arrangements and historical circumstances.