evidence: This border holds historical significance, as Uruguay was once a territory under Spanish and Portuguese rule. The Spanish crown had control over the region known as Banda Oriental, which encompassed present-day Uruguay. The struggle for independence from Spanish rule led to the creation of the independent state of Uruguay in 1828. [...] One such territory is the Isla Brasilera, also known as the Vizcaíno Peninsula. This small landmass is located in the Uruguay River, near the confluence with the Río Negro. It has been a subject of dispute between Uruguay and Argentina. Both countries claim sovereignty over the island, which has led to tensions and diplomatic negotiations. Another contentious area is the Arroyo de la Invernada, a small stream that acts as a natural border between Uruguay and Brazil. Disputes have arisen over the exact location of the border line along the stream, resulting in occasional conflicts and disagreements.