1 European (Russia to Iceland, a small part of Turkey which is not in Asia minor)
2 North American
2.1 Canadian
2.2 US (mainland)
2.3 Mexico
2.4 Greenland
3 South/Central American
4 Caribbean
5 Central Asia (roughly Afghanistan - Kazakhstan)
6 Indian subcontinent (including Pakistan and Bangladesh, Bhuthan, Nepal, and Sri Lanka)
7 South East Asia (south of China, East of India, and north of Australia)
8 East Asia (China, Japan, Koreas, Mongolia, Taiwan and Hongkong)
9 Australia and Oceana (including New Zealand).
10 Middle east (Turkey to Iran, to Egypt, but excluding Egypt)
11 North Africa (Anything north of the Sahara)
12 Sub-Saharan Africa (including Madagascar)
i think my divisions of Oceana and south east asia could be a bit ambigious, along with not being entirely sure that Georgia, Armenia and Azerbaijan should be in the middle east instead of seperating out to the Caucasus.
turkey getting a special place in Europe while neglecting Kazakhstan's place is a bit arbitrary, but is more for historical/cultural reasons than geographic ones.
Sub-Saharan Africa should probably be divided up a bit better but i lack the geography.