Which of the following describes an important outcome of the Congress of Vienna? A. The slave trade became increasingly important to European economies. B. Jewish people were given equal rights in Germanic states. C. Napoleon launched his final European military campaigns. D. European states had their borders clearly defined.
Generally speaking, it would be that "D. European states had their borders clearly defined" that was an important outcome of the Congress of Vienna, since this increased stability in Europe after the Napoleonic Wars.
