America - American
England - English
France - French
Canada - Canadian
Japan - Japanese
Italy - Italian
Put the word "the" in front of the adjective and you have an adjective representing a noun phrase. "The English" is short for "The English people". And yet - any of these adjectives ending in a -sh/-ch sound is plural, and any of them ending in -ian is singular.
Singular: the American, the Canadian, the Italian
Plural: the English, the French, the Japanese
Why? Where does this pattern come from?
P.S. And since when has a macro been defined as a "picture with a caption"? I've seen this several times in the past 24 hours.