[quote=“fruitloop”]Perhaps in some ways you could see nation state as an International Relations shorthand for the form of state common from the 18th to 20th century, not necessarily only having one major ethnic, linguistic or racial group. In some cases the lack of these might supposedly be made up for by defining political values (as in the US). In this way The US, USSR, China, India can still be seen as nation states.
By that I mean, possessing sovereignty, a distinct population (citizens) clearly defined borders etc. One theory or metaphor is commonly known as the Billiard Ball Model - states are impermeable - they can bounce off each other but not penetrate each other - they are mutually exclusive.
Prior to the reformation, European states were subservient to the Pope so this model didn’t hold then. These days, with all the international institutions, regulations and treaties, it’s difficult to justify impermeability (true sovereignty) too - perhaps The Vatican and Switzerland are the most sovereign states in the world - Switzerland only became a member of the UN in 2002 and The Vatican is not.[/quote]
The confrontation between China and the Western states in the 19th C. shows the difference between the nation-state system and traditional Chinese view of itself as the ruler of “all under Heaven” without equal.
In Medieval Europe more important than the supremacy of the Pope- itself an extremely fiercely contested battle- was the entire feudal system, where allegiances were on a personal basis, so you had situations where the King of England was a feudatory of the King of France for certain of his possessions, landowners would be part of a long, interlocking, and sometimes contradictory chain of loyalty, and entire countries were transferred as a result of royal marriages i.e. Henry II (of England) and Eleanor of Acquitaine (aka Peter O’Toole and Katherine Hepburn).
As far as the US being a multinational empire, no- though I think the USSR, as successor to the Russian Empire, would qualify. The US is made up of individuals of different racial/ethnic background, not different nations brought under one authority. Hmmm… with the possible exception of Indian tribes (and the South-West?)
But I think TC is right on his point - there were polities in the past that would fit the description of nation-state, even if there was no nation-state system.