One of the greatest facts about the Russian Revolution era is that it saw the rise of the world's first socialist state, the Union of Soviet Socialist Republics (USSR). This was an unprecedented development in world history, as it marked the first time a country declared itself to be officially socialist and based its government on socialist principles. The USSR was a major force in shaping the world during the twentieth century, and its establishment was one of the most significant events of the Russian Revolution era. Furthermore, the Russian Revolution was a major catalyst for the spread of socialism and communism around the world, and it has had a profound and lasting impact on global politics and economic systems