Did you know, for instance, that you can travel freely in any EU country,' simply on condition that you are in possession of a valid passport or identity card?
A wyddoch chi, er enghraifft, y gallwch deithio'n gwbl ddirwystr yn unrhyw un o wledydd yr Undeb Ewropeaiddl a bwrw bod gen­nych basport dilys neu gerdyn adnabod?