The Treaty between Uruguay and Argentina concerning the Río de la Plata and the Corresponding Maritime Boundary was signed in Montevideo on 19 November 1973 by Dr. Juan Carlos Blanco Estradé, Minister for Foreign Affairs of Uruguay, and Mr. Alberto J. Vignes, Minister for Foreign Affairs and Worship of Argentina.
The treaty provides the geographic coordinates for the boundary points in the Rio de la Plata, affords the status of Martín García Island and other islands in the Río de la Plata, designates Martín García Island as the seat of an Administrative Commission for the Río de la Plata (Spanish: Comisión Administradora del Río de la Plata, CARP), and regulates the adjacent maritime front.
In zones considered to be of exclusive jurisdiction, each party may exert its authority without interference from the other.
The inner waters of both countries are drawn intentionally to let the navigable waterways lie within the common zones.
You can help Wikipedia by expanding it.This article about the history of Argentina is a stub.