Answer:
As an effect of the Napoleonic Wars, Napoleon forced alliances on European nations, and the French annexed the Netherlands and Belgium (although they were freed after the end of the wars).
Step-by-step explanation:
The Napoleonic Wars were a series of armed conflicts between France and its allied countries and the changing coalition of other European countries during the reign of Napoleon Bonaparte. They were a continuation of the wars between the First French Republic and the countries of the First and Second Coalitions, which broke out due to the French Revolution and lasted - on the initiative and thanks to financing by Great Britain - throughout the period of the Consulate and the First Empire. Historians disagree as to when exactly their date should be dated. Some believe that they should be counted from when Napoleon took power in France in November 1799. Others recognize that the conflicts of the period 1799-1802 should still be included in the wars of the French Revolution and consider the breaking of peace in Amiens and the declaration of war in 1803 by Britain as the starting point of the "Napoleonic Wars".
These wars - thanks to Napoleon's leadership talents, initially victorious, which resulted in the beating of most of the former European powers in the battlefield - ended in the defeat of France on November 20, 1815 - after the final defeat of Napoleon at the Battle of Waterloo and the signing of the second Treaty of Paris in 1815.
The Napoleonic wars indirectly contributed to the creation of a new style of thinking in many European countries, and consequently to the fight for national liberation in Poland, Belgium, Italy and the Balkans.