SOCIAL change does not descend from Heaven. That was the basic message at an international conference on the “Challenge of Building an Alternative Political and Socio-Economic System”. Cuban Ambassador to Nigeria, Her Excellency Clara  Margarita Pulido Escandell, gave the Opening Address at the July 16, 2022  virtual conference  to mark  the 17th Anniversary of the Nigeria-based Amilcar Cabral Ideological School- Movement, ACIS-M.