Language & WorldFact
The EU shares a land border with Brazil.
French Guiana in South America is a full part of France and therefore of the EU, using the euro. Its 730 km border with Brazil is the longest land border France has anywhere. Réunion, Martinique, Guadeloupe, Mayotte, the Canaries, Madeira and the Azores are in the EU too. That is why Europe's spaceport at Kourou sits near the equator.
Useful: Paying in euros in the Caribbean or entering South America visa-free may mean you're still in the EU.
Source: en.wikipedia.org