(a)

A community of persons permanently occupying a definite territory independent of external control and possessing an organized government.

(b)

A politically organized people of a definite territory and possessing an authority to govern them, maintain law and order, protect their natural rights, and safeguard their means of sustenance.

(c)

A number of persons who have been living in a definite territory for a very long time with their own culture, tradition, and government.

(d)

A society permanently living in a definite territory with a central authority, an executive responsible to the central authority, and an independent judiciary.