Ten nations signed the Berne Convention establishing international copyright protection requiring member states to recognize foreign authors' rights automatically without formal registration. This treaty transformed literary works into globally tradable intellectual property, creating legal frameworks for authorial income beyond national borders. Copyright harmonization enabled professional authorship as sustainable career path in expanding international book markets.

International copyright allowed poets like Tennyson and Longfellow to earn royalties from foreign editions, reducing dependence on patronage or periodical publication. Translation became economically viable enterprise as protected works could be licensed across linguistic markets. Copyright law's emphasis on individual ownership conflicted with folk and oral traditions, marginalizing collective authorship models in global literary economy.