Sentence:  In the <WSD>United</WSD> States Department of Agriculture 's Yearbook of Agriculture , 1952 , which is devoted entirely to insects , George E. Bohart mentions a site in Utah which was estimated to contain 200000 nesting females . 
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