Napoleon Bonaparte was the ruler of France. He was known as the 'son of the revolution'. In 1804, Napoleon Bonaparte crowned himself the Emperor of France and reintroduced monarchy in France. He conquered his neighbouring countries and created kingdoms, where he placed his own family members. He was called a moderniser of Europe. 
Napoleon Bonaparte is called as a Liberator because of his policies and his promises which made people believe that he will bring freedom. He introduced many laws such as the protection of private property and a uniform system of weights and measures provided by the decimal system.  Initially, many people believed that Napoleon was a liberator who would bring freedom for the people. But soon his army was viewed as an invading force. So, he was finally defeated in 1815, in the famous ‘Battle of Waterloo’. Many of his measures that carried the revolutionary ideas of liberty and modern laws to other parts of Europe had an impact on people long after Napoleon had left.

Napoleon Bonaparte: Napoleon Bonaparte was a French military and political leader who rose to prominence during the French Revolution and its associated wars. He led several successful military campaigns and served as the Emperor of France from 1804 to 1814.

Why was he called a liberator?

Napoleon Bonaparte is often called a liberator because of his role in spreading the ideas of the French Revolution throughout Europe. Some of the ways in which he helped spread these ideas include:

Overthrowing monarchies: Napoleon led several successful military campaigns against monarchies throughout Europe, which helped to weaken the power of these rulers and pave the way for more democratic forms of government.

Promoting nationalism: Napoleon also promoted the idea of nationalism, which is the belief that people who share a common language, culture, or history should be united in a single nation-state. This helped to promote a sense of unity among people who had previously been divided by their loyalty to different rulers.

Reforming legal systems: Napoleon also reformed legal systems throughout Europe, which helped to create more equitable and just societies. Some of his reforms included the creation of a standardized legal code and the establishment of religious toleration.

Overall, Napoleon's actions helped to promote the ideals of liberty, equality, and fraternity that were central to the French Revolution. While he was not without his faults, his legacy as a liberator continues to be celebrated by many people today.