Making a thing or person American.
The Germans sank a British ship which had American passengers. This was the first step. After this due to the unrestricted submarine warfare more US ships were sunk by German U-boats.
A . usually lived and worked in cities and town
On two levels, then, Washington Irving profoundly influenced the American Christmas. His melding of jolly St. Nick and an English commemoration of old into a wintry celebration of nostalgia attests to the rich cultural legacy bequeathed to us by this native New Yorker..
The answer should be C and E. Hope this helps!