Sentence:  If the dance teachers of <WSD>America</WSD> make it their business to prepare their young charges for the gymnastics that must come some day if our schools are really responsible , we will be that much ahead . 
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