The answer is The Enlightenment, the Napoleonic Wars, the Congress of Vienna and the German unification
Explanation:
In history, arranging events in chronological order means to organize events according to dates from the oldest event to the most recent one. According to this, the first event from the options is the Enlightenment as this took place during the 18th century (the 1700s) and implied important changes in ideologies, movements, and ideas in Europe. This event is followed by the Napoleonic Wars that took place between 1803 and 1815 and were a set of wars between France and different European power. After this, the Congress of Vienna took place (1814-1815) to create a peace plan in Europe. Finally, in chronological order, there is the German unification that occurred in 1871 and led to the German Empire.
