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Understanding France's Longest Border: The France-Brazil Connection

Understanding France's Longest Border: The France-Brazil Connection

Jun 26, 2024


One of the lesser-known facts about France is that its longest border is not with any of its neighboring European countries but with Brazil. This border runs through French Guiana, an overseas department of France located on the northeast coast of South America.

Geographical Context

French Guiana spans an area of about 83,000 square kilometers and is bordered by Brazil to the south and east, Suriname to the west, and the Atlantic Ocean to the north. The France-Brazil border stretches approximately 730 kilometers, making it the longest border France shares with another country.

Historical Insight

French Guiana has been a part of France since the 17th century and is considered an integral part of the French Republic. Its status as an overseas department means that it is governed by the same laws and structures as regions within mainland France. This geopolitical arrangement makes the France-Brazil border particularly noteworthy, as it extends the presence of the European Union to South America.

Economic and Environmental Significance

The region is characterized by its dense rainforest, part of the Amazon, which has significant ecological and environmental importance. The area is rich in biodiversity and plays a crucial role in global climate regulation. However, this also makes it a hotspot for environmental issues, such as deforestation and illegal mining, which are often subjects of cross-border cooperation and contention.

Cultural and Social Impact

Despite being a part of France, French Guiana features a unique blend of cultures, with influences from Indigenous peoples, Creoles, Maroons, and immigrants from Haiti, Brazil, and other parts of the world. This cultural diversity is reflected in the region's languages, festivals, and daily life, distinguishing it from both mainland France and neighboring countries.


The France-Brazil border through French Guiana represents a fascinating aspect of global geography that challenges conventional notions of political and cultural boundaries. It highlights the complexities of managing an overseas territory in a sensitive ecological zone and underscores the interconnectedness of regions and countries in today's globalized world.

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