Title:La Base Nacional Curricular Común (BNCC) del Brasil y la componente “historia” : El debate en Río de Janeiro de 2015-2016 y la experiencia del Observatorio de la BNCC/UFF / The National Common Curricular Base (BNCC) of Brazil and the “history” component. The debate in Rio de Janeiro from 2015-2016 and the experience of the BNCC/UFF Observatory