Here is the region map. As you can see Africa and north Asia have a few large provinces, while Europe and southern Asia have many smaller provinces.
As the region limit is 199, I had to reduce the number of provinces each faction had (I don't think most European factions suffered too much). Though the only fair way to make a map would be to determine the population of each faction and give them a proportionate number of regions. However I don't know the medieval populations of Eurasia and Africa so I can't do this (the person who made the map may have known).
Regarding the Asian units they're mostly vanilla units, though I did change their weapons. The exception being the factions in India, which needed some new units. Below are some screenshots of the Asian units.
Mounted Javelinmen
Elephant Javelinmen
India vs Persia
India vs Persia 2
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