A more thorough explanation:

The Congress of Authors and Artists was a convention held in the 19th century that brought together writers, artists, librarians, and others who were interested in promoting universal copyright protection. The Congress met three times, in 1858, 1861, and 1877, and passed resolutions that helped to establish the foundation for the Berne Convention.

The Berne Convention is an international agreement that sets out the rules for copyright protection around the world. It was first signed in 1886 and has been updated several times since then. The Congress of Authors and Artists played an important role in the development of this convention by advocating for stronger copyright laws and protections.

For example, one of the resolutions passed by the Congress in 1858 stated that "the right of authors to their literary and artistic works is an inalienable right, which ought to be respected by all nations." This statement helped to establish the idea that copyright is a fundamental right that should be protected by law.

Another resolution passed by the Congress in 1877 called for the creation of an international copyright office to help enforce copyright laws and protect the rights of authors and artists. This idea was later incorporated into the Berne Convention, which established the International Bureau of Intellectual Property as a central authority for copyright protection.

Overall, the Congress of Authors and Artists played an important role in shaping the development of copyright law and protection around the world. Its efforts helped to establish the idea that copyright is a fundamental right that should be respected and protected by all nations.