Depending on the context, it could be a territory or a colony.
A territory under the control of another country is called a colony.
There was no country called Gaul in Roman times. The present day connotation "Gaul" is considered to be the country of France. However in Roman times "Gaul" was a vast territory stretching from northern Italy and beyond. The territory called Gaul was/has been divided into several present day countries.
Czechoslovakia is now divided into two separate countries. The first one is called Czech Republic. The second country is called Slovakia. I believe they separated into 2 countries on January 1, 1993.
You mean before the Mexican-American War? That was the Nueces Strip.
Spain. That is why they are called "Spanish."
A part of a country separated from the rest of its nation is called an enclave or exclave, depending on whether it is fully surrounded by foreign territory or connected to the main country by land.
Territory ruled by a distant land is called a colony. A colony is any people or territory separated from but subject to a ruling power or government.
A territory under the control of another country is called a colony.
parts of countries surrounded by foreign territory is enclave or enclaves.
The four modern countries at makeup what used to be called Canaan are; Israel, Jordan, Syria and Lebanon. The country of Israel comprises much of the territory of what was Canaan.
There was no country called Gaul in Roman times. The present day connotation "Gaul" is considered to be the country of France. However in Roman times "Gaul" was a vast territory stretching from northern Italy and beyond. The territory called Gaul was/has been divided into several present day countries.
Generally, "constituent country" is a term applied to territories that call themselves countries, that are a part of a bigger sovereign country. For example, England is a constituent country of the United Kingdom and Greenland is a constituent country of the Kingdom of Denmark. If you mean a sovereign country within another sovereign country, that is called an enclave.
An area of land owned by a country is called territory.
A colony
The process of adding a territory to a country is called annexation. During annexation, a territory is acquired and established within an existing political unit.
Czechoslovakia is now divided into two separate countries. The first one is called Czech Republic. The second country is called Slovakia. I believe they separated into 2 countries on January 1, 1993.
It is called ceding or transferring territory.