The causes of the French Revolution are complex and are still debated among historians. Following the Seven Years' War and the American Revolution, the French government was deeply in debt. It attempted to restore its financial status through unpopular taxation schemes, which were heavily regressive. Leading up to the Revolution, years of bad harvests worsened by deregulation of the grain industry also inflamed popular resentment of the privileges enjoyed by the aristocracy and the Catholic clergy of the established church.