>>117Another example you mention, the Russian stove/oven design was common in place XV century onward from Poland, North Europe, ahead to Manchuria where it was parallel-invented as milder climate model, 'ondol'. Yet in Western Europe no such oven was even considered to be adopted. An English domestic economy encyclopaedia[2] author from 1830's cites Count Rumford (yes, that one who invented Soylent before it was cool in the Valley) about all the advantages of a Russian stove in regards to fuel savings (you don't have to heat up three stone walls facing outside, duh), fire hazards, downdrafts and carbon monoxide poisonings compared to a standard anglo fireplace, yet concludes that no such oven is needed neither in England, nor in America because they've got enough coal and forest to burn through, YOLO. These ovens are so effective that 18th century Japanese castaway/forced diplomat travelers described room temperatures as uncomfortably hot for them. There are even more modern additions to this stove design to improve ventilation (forced clean air intake) and efficiency (ground mass pre-heat and snake chamber). Whatever trend is enforced, it's enforced by governments or corporations (as evident in 19th century model of globalism in architectural styles or earlier examples of architects/builders specifically hired by monarchs), never as grassroots inter-regional and inter-national networking.
[2] An encyclopædia of domestic economy; Webster, Thomas; Parkes, William, Mrs
https://archive.org/details/b21471708