Brazil has terrestrial boundaries with nine countries of South America, and with the French Department of Guiana.
Brazil has borders with every country in South America with the exception of Chile and Ecuador, totalling 16,885 kilometres (10,492 mi).
[1] Brazil has the world's third longest land border, behind China and Russia.
The falls were submerged following the construction of the Itaipu Dam.
With 10 bordering countries forming a single incomplete ring around Brazil, the borders of Brazil include 9 triple points (also called tripoints) in which the borders of three countries join at a single point.