These legal transport systems in Europe constitute useful models , which can be adapted in developing countries . Economic Commission for Latin America and the Caribbean ( ECLAC ) The full text of the reply has been issued in UNCTAD/LDC/Misc.28 The Economic Commission for Latin America and the Caribbean ( ECLAC ) supports South America 's two landlocked countries - Bolivia and Paraguay - in their efforts to improve transport and customs transit facilities across neighbouring countries for access to seaports .