Final answer:
In 1792, Prussia and Austria went to war with France to restore the French monarchy and counter the spread of republican ideals during the French Revolution.
Step-by-step explanation:
In 1792, two German powers, Prussia and Austria, went to war with France. This conflict was part of the larger French Revolutionary Wars, which were sparked by the French Revolution and the desire of the French to spread republican ideals. Prussia and Austria, as monarchies, saw the French Revolution as a threat to the existing order in Europe and sought to restore the French monarchy.