As used in this chapter— (a) The term “ State ” means the several States , the District of Columbia, the Commonwealth of Puerto Rico , and the territories and possessions of the United States. (b) The term “ local public bodies and agencies ” includes public corporate bodies or political subdivisions; public agencies or instrumentalities of one or more States, municipalities, or political subdivisions of one or more States (including public agencies and instrumentalities of one or more municipalities or other political subdivisions of one or more States) ; Indian tribes; and boards or commissions established under the laws of any State to finance specific capital improvement projects. (c) The term “ development cost ” means the cost of constructing the facility and of acquiring the land on which it is located, including necessary site improvements to permit its use as a site for the facility. ( Pub. L. 89–117, title VII, § 706 , Aug. 10, 1965 , 79 Stat. 492 .)