Las razones por las que la independencia es mala es porque no podrá pedir ayuda, se sentirá solo y es posible que no sea tan eficaz como cree. (Sorry if the translation is not the best)
Population got larger, rapid development of rail roads and ports, and finally land seized from the Spanish land owners and the native tribes. :)
France is the country that became the center of the Industrial Revolution
Serfs may eventually work their way to freedom (usually not), if you know the term tenant farmers, individuals who work on a property with some believe that eventually they may pay their debts off and become a freeman. An enslaved person, will never believe that they will eventually become free.
-My opinion anyway (probably wrong) but worth a try.
