Establishing a Patent System in Nations Without it

How many nations do not have a patent system? My research indicates that their might be 192 nations, 142 of which do not have a patent office?

What is the most effective art & science method of creating patent offices in those nations that do not have them?

To me, the only ingredient necessary is Inspiration.

Those nations without patent offices are probably like Namibia, # poor and don't give a #.