If you're asking in general then, the area has to have people who share common customs, belief and language.However, this might not entirely be true as there are some countries which have vast diversity and still portray nationalism.
Hope this helps!!
Outlining, because your essay is based on the claim you come up with
Answer:
True. a vaquero is a mexican cowhand
The cold war originates in the emergence of USA and Soviet union as the two dominant powers and main victors of the ww2. The two nations had conflicting ideologies which they desired to spread into the world. as the ww2 closed, the two countries failed to agree on how they would treat countries that had fallen in the war such as Japan,German and several eastern Europe countries. Stalin's soviet union was aiming at expanding communism, and the USA had to contain it.
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