For research purposes, for a personal project, I am looking into some points that I consider essential.

Between 1800 and 1900, was there any unknown disease in England? Specifically, an unknown disease that occurred in wild (unexplored) fields (lands), thus leading to the specific area not being explored.

On another point, imagine that in the center of this unexplored land a small land was discovered that seemed to be blessed (with fertile lands, healthy animals and crystal clear rivers), where a small town (village) would be built, I believe more or less between 1830 and 1860, what would the structure of this town (village) be like?

What if in 1940 a small regional war occurred, where the city was invaded, became the base of the regional dictator, and then expanded, with the excuse that the surrounding lands needed the raw materials from that city (village)?