The French Revolution was a necessary event which lead to positive impacts is correct As It overthrowed the king(as that king didn’t cared about the common people or the people belonging to the third estate in the France) the king was Louis XVI Also it helped to overthrow he the estates system in the France. It also helped to free slaves Hope I helps you!
He meant that there was a limit of land Spain had the ability it could control, rather than the amount it could actually be successful controlling, instead of it falling apart.