It looks like you are trying to make a map based on geographical features.
Some suggestions:
- It doesn't hurt to look at historical patterns of development. One example: Mexico; more specifically the big province that occupies most of northern Mexico. That should be split into two. Historically, the southern part, ie the Valley of Mexico, around where Tenochtitlan/Ciudad de Mexico is, was far more populous than the northern part, and for good reasons: wetter, better soil, etc.
- Some areas are overrepresented. Europe, notably; I personally would just split France into north and south. Slovakia can be grouped together with the Pannonian Plains. Austria and Bohemia can be one province.
- Some sparsely populated areas can use a few less provinces; notably: near-Arctic areas like Alaska, northern Canada, Scandinavia, Siberia, and desert areas like the Sahara and Central Asia.
- On the other hoof some areas are underrepresented; most of Asia, and pretty much all of the Americas.
- New Guinea could just be one province.
- Korea should really be separated at the Yalu River.
- Baluchistan doesn't really need to be there.
- Rajasthan/Gujarat should really be separated from the Ganges valley