Simplify the following text for a Grade 13 native English-speaking person.
Original: Thailand divides its municipalities ( thesaban ) into three levels - cities about the quantity of inhabitants , ( thesaban nakhon ) , towns ( thesaban mueang ) and townships ( thesaban tambon ) .
Simplified: Thailand divides its municipalities ( thesaban ) into three levels - cities ( thesaban nakhon ) , towns ( thesaban mueang ) and townships ( thesaban tambon ) .