Statistics for occurrence #1 of “United States” in entry united-states-of-america-indian-territory of Harper's Encyclopedia of United States History:

...
A division of the United States definitely set apart for the Indians, June 30, 1834, lat. 33° 35′ to 37° N., long. 94° 20′ to 103° W. Oklahoma and Kansas are on the north, Missouri and Arkansas to the ...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
United States (United States) 100,886 16,340 0 0 0 user votes
United States (New Mexico, United States) 6 0 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.