The Province of Cabinda.
Polish Corridor
Kaliningrad
Italy is separated from the rest of Europe by the Alps.
The Republic of Angola is in southwestern Africa. Its borders are the Atlantic Ocean to the west, the Democratic Republic of the Congo (DRC, formerly Zaire) to the north and east, and to the south is Namibia. A small, isolated region belonging to Angola called the territory of Cabinda is north of the mouth of the Congo River and is separated from the rest of Angola by a small strip of territory belonging to the DRC.
When part of a population becomes separated from the rest, a process known as allopatric speciation often begins. This leads to the development of new species over time as the separated populations adapt to their respective environments and accumulate genetic differences.
The Baja California peninsula.
Depending on the context, it could be a territory or a colony.
Continental Drift
India is part of Eurasia. India is separated from the rest of Eurasia by the Himalayas.
A value separated from the rest of the data is called an outlier
it would cut the new enigland from the rest of the country
The Iberian Penisula is part of Europe but separated from the bulk of Europe by the Pyrenees Mountains.