Usonia vs land of opportunity

Usonia

name
  • Frank Lloyd Wright's utopian vision of the United States 

  • The United States of America; a one-word name for the country that does not have the ambiguity of "America". 

  • A community in New York state designed by Frank Lloyd Wright in his Usonian style 

  • In geopolitical and international economic modeling, a prototype superpower that, in competing with an antagonistic superpower Russonia (the Soviet Union), allows Thirdonia (a hypothetical neutral Third World country) to extract considerable wealth from both. 

land of opportunity

noun
  • The United States. 

How often have the words Usonia and land of opportunity occurred in a corpus of books? (source: Google Ngram Viewer )