parts of countries surrounded by foreign territory is enclave or enclaves.
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.
That country is called a landlocked country, meaning it is surrounded by other countries and has no coastline.
Oklahoma was previously known as the Indian Territory. It is located in the southwestern region of the United States and does not share a border with a foreign country.
Countries are referred to as mainland countries to distinguish them from islands or territories that are not connected to a larger landmass. Mainland countries are typically geographically larger and share physical borders with neighboring countries, while islands are surrounded by water on all sides.
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.
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.
That country is called a landlocked country, meaning it is surrounded by other countries and has no coastline.
The rules made for making relations with foreign countries is called foreign policy
They are called 'International Borders'
In general terms a professional who does this is called a "diplomat".
Countries do not have affairs in the way you imply in your question. Countries have foreign relations with other countries and the department that deals with these relationships is called the foreign affairs department.A foreign affairs department will have relations with all countries. some of which will be ambassadorial relationships.
They are called Embassies or an Embassy:)
foreign interference
Because its located in the middle of South America and thus surrounded by many of the countries of S. America
Oklahoma
Oklahoma was previously known as the Indian Territory. It is located in the southwestern region of the United States and does not share a border with a foreign country.
US cellphones will get signals in foreign countries if and only if your provider has collaboration with any provider in that company in that foreign country.This is called "International Roaming".