Middle America vs Middle England

Middle America

name
  • The American middle class. 

  • A portion of the United States comprising rural and suburban areas, and the mindsets of these areas. 

  • The Midwestern United States. 

  • A geographical region comprising Mexico, Central America and the Caribbean 

Middle England

name
  • The conservative white middle classes who live outside London, considered as a group. 

  • The English Midlands. 

How often have the words Middle America and Middle England occurred in a corpus of books? (source: Google Ngram Viewer )