Until learning Italian with all of the British students I had never heard a sweater referred to as a "jumper" I am Canadian. Our understanding here of a jumper is a sleeveless dress worn over a blouse typically as a schoolgirl uniform. Funny how we can both speak English but not exactly the same language. ;-)
It doesn't always have an American flag.... If I look at the accounts that the other members of my family have it just shows the flag of the language they're learning. However if I look at the people around me in my league it shows me both the flag they're learning and if they're not British it shows what language they're learning in.