Sentence:  "Jeeves:" Foreign travel often liberates emotions best kept in check, sir. The air of <WSD>North America</WSD> is notoriously stimulating in this regard, as witness the regrettable behavior of its inhabitants in 1776./ "B. Wooster:" Hm? What happened in 1776, Jeeves?/ "Jeeves:" I prefer not to dwell on it, if it's convenient to you, sir. 
Meaning of the word marked with <WSD> tags:  (Q49)The continent that is the northern part of the Americas; that part east of the Pacific Ocean, west of the Atlantic Ocean, north of South America and south of the Arctic Ocean.