Statistics for occurrence #1 of “British Isles” in chapter 1, page 558 of Cambridge History of American Literature: volume 3:

...own. The farther one travels from London the less noticeable becomes the difference between British English and American. If it be urged that the literary language is largely uniform throughout the British Isles —leaving out works that are frankly in dialect—this can in great part be accounted for by the fact that political and literary life centre
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Entity Corpus Doc Corpus Doc  
British Isles 140 2 0 0 0 user votes

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.