Yay! We speak English!

I always assumed it was because Americans wouldn’t be able to figure out which option to choose if you showed the Union Jack.

Had to show the 'ol stars & stripes or the help lines would have gone into meltdown

You might want to re-think that old colonialist propaganda that the blood-soaked saltire on the Union Jack is the “cross of St. Patrick”.

From
http://www.geocities.com/Athens/Sparta/1648/cros_e.htm
http://www.doyle.com.au/st_pats_flag.htm