All music is by Kevin MacLeod
This is what I call "ASMR"
This includes former territories of the country proper, vassal states, puppet states, military occupations, etc., but overseas lands will not be shown, just to keep that in mind.
Africa is next but I'm currently working on it rn.
‪@GeographyandSpace‬'s is a little bit inaccurate but anyways.
Source: Other history channels, Wikipedia and Omniatlas
Wanna know the music titles then? Fine, they are below:

Hall of the Mountain King Kevin MacLeod
The Pyre Kevin MacLeod