I believe the US uses the dollar as well, borders the Pacific, Arctic and Atlantic. Its capital is Washington and pretty sure it has 20% of the world's immigrants. But liking the fact that it took you until the last group to think that it was missing a certain country.
How Argentina borders 3 oceans? I see South Ocean is not taken as an ocean here because if it was counted as an ocean, Australia would had 3 oceans too. Do you count Argentina's Antarctica claims as its territory? And also why France is not here?