On September 12, 1946, a meeting of heads of state took place in Santa Ana, El Salvador, where the Santa Ana Agreement between El Salvador and Guatemala was signed. The two countries agreed to study the conditions that will allow the political unity of Central America through a Commission composed of three persons appointed by each of the governments subscribed to the agreement.[2] The agreement was left open for the accession of Costa Rica, Honduras and Nicaragua. This was ratified by El Salvador on November 19.[3]