Treaty of Aranjuez (1777)

Based on the terms of the treaty, the two countries agreed to define the border of their respective colonies on the island of Santo Domingo (also known as Hispaniola) in the Caribbean Sea, of which they shared ownership.

Spain made substantial gains in the upper Artibonite Valley in middle section of the island.

It was one of a number of diplomatic agreements signed at the palace in the eighteenth century and should not be confused with the 1779 Treaty of Aranjuez between the two states, which led to Spain's entry into the American War of Independence.

The northernmost and southernmost parts of the international border between Haiti and the Dominican Republic still conform to the boundaries between the French and Spanish colonies agreed to in the Treaty of Aranjuez.

[1] An original boundary stone is on display in the Museo de las Casas Reales, Santo Domingo.

In the Treaty of Aranjuez of 1777 , France and Spain agreed to create a fixed border between the two colonies, mapped and defined from sea to sea. This was the original border that divided the island into two parts.