The Republica Unida de las Comunidades de Castilla, Leon, Asturias y Cantabria - shortly called Republica Unida de Castilla y Leon or colloquially Republica Comunera - was formed a few years ago as the union of several Juntas of the northwest of former Spain. At west it borders on the Republica de Galicia, at north it borders on the Republica de Asturias and and has a small outlet to the sea. In the south and the east the borders are not clear, the boundary is confused with other actors (warlords, small communities, etc..)
The Republic is the more recent of the successor states in Spanish mainland. It was formed in 2001 when the Junta of Leon joined with other smaller Juntas of Northwest to form a confederal State with its capital in Leon.