As it is known, people continue their lives in an ongoing change. This change can sometimes be bloody or terrifying. He can give many examples for this. However, one of the most important of these is the French Revolution. This revolution had many effects. The most important effect was the start of the nationalist movement. This idea, rooted in the past 300 centuries, still persists to some extent. The most important effects of this current of ideas were the weakening of multinational and multicultural empires and the rebellion of minority cultures within these empires. In particular, empires that followed a multi-national and tolerance policy, such as the Ottoman Empire, suffered great wounds and came to the brink of collapse. For example, the Greek rebellion. According to the Edirne Treaty signed in 1821, states such as Greece and Russia that claimed to be the protector of Orthodoxy and wanted to weaken the Ottoman Empire presented this idea as a reason and caused the Turkish state to be expelled from the Peloponnese peninsula. The second is the removal of systems that marginalize and separate people, such as the caste system. To talk about these systems, it's a system where authority, rights and power decrease as you go from top to bottom of a triangular pyramid. For example, if you are a peasant, you will have fewer rights and pay more taxes than nobles and clergy. Also, the way you will be judged and the penalties you will receive will be more severe and unfair than they are. The basis of the French Revolution was a revolution caused by people who paid high taxes and suffered injustice. To summarize briefly, the French Revolution had many effects. These are the damage to the caste system and the formation of nationalism. It should also be added that every revolution is the birth of an idea or thought.