The official TMBG video includes much map and flag fun... but where is West Xylophone?
From This Might Be A Wiki - The TMBG Knowledge Base:
Technically, there is no nation whose name begins with the letter 'X' or the letter 'W.' (Wales is a principality, Wallis is a territory of France, and Western Sahara is a disputed territory below Morocco). The fictional West Xylophone is used as a stand-in for both of these letters.Several other TMBG fans have created videos for the song, with more map and flag fun:
However, there is some dispute as to the correct official flag of West Xylophone: