Sentence:  cause on-site inspections to be made of promising projects , domestic and foreign , and , in the case of projects located in the <WSD>United</WSD> States , cooperate and participate in their development in instances in which the purposes of this Act will be served thereby ; 
Meaning of the word marked with <WSD> tags:  North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776