Statistics for occurrence #1 of “United States” in chapter 7 of Admiral David D. Porter, The Naval History of the Civil War.:

...pating a war between England and the Northern States of the Union. This excitement grew out of the arrest of the British mail steamer Trent on the high seas, by Captain Charles Wilkes, of the United States frigate San Jacinto, and taking from her four male passengers who claimed the protection of the British flag. Two of these gentlemen were Messrs. Mason and Slidell, formerly members of the U. S. ...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
United States (United States) 100,886 694 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.