Why was Goethe the first to propose the concept of "world literature"?

Goethe was a famous German writer in the 19th century. He was the first person to propose the concept of "world literature". Goethe believed that literature was not only the language art of a certain country or nation, but also involved all aspects of human life and history across the vast field of language and culture. Therefore, he proposed the concept of "world literature", which meant that literature was an art on a global scale that should be understood and appreciated by everyone. Goethe believed that the problem of world literature was the huge differences and contradictions between different cultures. He believed that these differences and contradictions could be revealed and resolved through literature to promote mutual understanding and communication between different cultures. Goethe's idea of world literature had a profound impact on the later literary research and literary creation, promoting the communication and cooperation between different cultures and promoting the development and prosperity of world literature.