Bajo qué concepto económico El Salvador decidió cultivar, primordialmente, café? ​

The ubiquity of "common" schools in the United States belies both the long effort to establish a system of publicly supported elementary and secondary schools and the many controversies that have attended public schools before and since their creation. The belief that public, or free, schools andpauper schools were synonymous terms, and that such schools were only for children of the poor, long hampered the acceptance of the idea that publicly supported schools could and should exist for all children, regardless of social class, gender, religion, ethnicity, or country of origin. Moreover, the European and colonial insistence that responsible parents need concern themselves only with the education of their own children through the avenues of the family, church, or the voluntary efforts of like-minded citizens only slowly gave way to the conviction that publicly supported common schools might serve all children equally, and in so doing advance the moral, social, and economic interests so vital to the nation.The common school movement took hold in the 1830s, and by the time of the Civil War organized systems of common schools had become commonplace throughout most of northern and midwestern states. Expansion of common school systems into the southern and far-western states progressed at a slower rate, but by the opening years of the twentieth century publicly supported systems of common schools had become a cornerstone of the American way of life. However, the emergence of a system of public schools across the nation was neither an inevitable nor an uncontested movement. Moreover, its survival into the future may prove to be as problematic as was its development in the past. 
This is what I know. I hope it helped.