To what extent could a 21st century country realistically resemble the society, culture, economics, and aesthetics of the European High Middle Ages and what divergences would it require?
I. Religion
This is potentially the easiest, any Latin European or Latin American country (or another strongly Catholic country like Poland) could do it, especially in a TL with no Protestant Reformation or at least no Vatican II.
It is not far fetched for Catholicism to remain more conservative and traditional than in OTL. Just look at Islam and Hinduism as examples.
II. Architecture
This is also quite doable. Plenty of modern European and Latin American countries have a Medieval (or very Early Modern Period) old town, just look at Prague or Krakow. Gothic architecture and modern technology seem to work together without difficulty.
Castles and even 18th century Fortresses are obviously too primitive for modern warfare, though nothing is preventing a modern military base to also work as permanent living quarters and even places for vendors to set up business. A good OTL example is Guantanamo Bay in Cuba.
In this way they could at least culturally continue to be called "Castles".
Knighthood could survive in a military where only nobles are privileged to serve as officers.
III. Monarchy and Feudalism
Potentially the second hardest. Even Saudi Arabia is pushing it with Universal Human Rights being applied in most countries. Noble privileges and their wealth could remain much higher than that of the common people, but pulling off a human rights compatible version of Serfdom would be difficult.
IV. Economy
Likely the hardest. Some old-timey version of the Gold Standard combined with a degree of progressive taxation, a banning of Usury, and the abolition of the Stock Market.
Even Muslim countries struggle with ideologically based "Islamic Banking" and have to apply modern workarounds.
What are your ideas?
I. Religion
This is potentially the easiest, any Latin European or Latin American country (or another strongly Catholic country like Poland) could do it, especially in a TL with no Protestant Reformation or at least no Vatican II.
It is not far fetched for Catholicism to remain more conservative and traditional than in OTL. Just look at Islam and Hinduism as examples.
II. Architecture
This is also quite doable. Plenty of modern European and Latin American countries have a Medieval (or very Early Modern Period) old town, just look at Prague or Krakow. Gothic architecture and modern technology seem to work together without difficulty.
Castles and even 18th century Fortresses are obviously too primitive for modern warfare, though nothing is preventing a modern military base to also work as permanent living quarters and even places for vendors to set up business. A good OTL example is Guantanamo Bay in Cuba.
In this way they could at least culturally continue to be called "Castles".
Knighthood could survive in a military where only nobles are privileged to serve as officers.
III. Monarchy and Feudalism
Potentially the second hardest. Even Saudi Arabia is pushing it with Universal Human Rights being applied in most countries. Noble privileges and their wealth could remain much higher than that of the common people, but pulling off a human rights compatible version of Serfdom would be difficult.
IV. Economy
Likely the hardest. Some old-timey version of the Gold Standard combined with a degree of progressive taxation, a banning of Usury, and the abolition of the Stock Market.
Even Muslim countries struggle with ideologically based "Islamic Banking" and have to apply modern workarounds.
What are your ideas?