The reason there was slavery in the United States is because there was more work to do than people to do it. The North's population grew quicker than the South's, so they could become "moral"quicker
France (still a constitutional monarchy) declared war on Prussia and Austria in 1792 for various reasons, among them French concerns about counter-revolutionary emigres in German-speaking countries and in the Austrian Netherlands, and fear that Austria and Prussia might intervene in French affairs (either to support Louis XVI or to take advantage of the internal dissent).
After the execution of Louis XVI, several more states, Great Britain and Spain among them, severed ties. The Republic then declared war on those countries, and a general European conflict ensued in one form or another for the next 22 years.
