[1] On 13 December 1991, the ODECA countries (Spanish: Organización de Estados Centroamericanos) signed the Protocol of Tegucigalpa, extending earlier cooperation for regional peace, political freedom, democracy and economic development.

[3] Four countries (Guatemala, El Salvador, Honduras, and Nicaragua) experiencing political, cultural and migratory integration have formed a group, the Central America Four or CA-4, which has introduced common internal borders and the same type of passport.

The participants concluded the conference with an agreement creating the Central American Court of Justice (Corte de Justicia Centroamericana).

The court operated until April 1918 from its headquarters in Costa Rica; despite efforts beginning in March 1917 (when Nicaragua submitted a notice of termination of the agreement), it then dissolved.

Reasons for the agreement's failure include: At the end of World War II, interest in integrating the Central American governments began.

On 14 October 1951 (33 years after the CACJ was dissolved) the governments of Costa Rica, El Salvador, Guatemala, Honduras and Nicaragua signed a treaty creating the Organization of Central American States (Organización de Estados Centroamericanos, or ODECA) to promote regional cooperation and unity.

The following year (12 December 1952), ODECA's charter was amended to create a new Central American Court of Justice (Corte Centroamericana de Justicia, or CCJ) without the time limit of its previous incarnation.

The Charter of San Salvador was ratified by all Central American governments, and on 18 August 1955 their foreign ministers attended its first meeting in Antigua Guatemala.

The Declaration of Antigua Guatemala authorized subordinate organizations of ODECA to facilitate economic cooperation, better sanitation and progress in the "integral union" of the Central American nations.

In 2005, it ruled that Nicaraguan congressional reforms (which removed control of water, energy and telecommunications from President Enrique Bolaños) were "legally inapplicable".