How might the location of mainz have helped the spread of printing?

Mainz's location along the Rhine River provided easy access to trade routes, facilitating the distribution of printed material to other parts of Europe. Additionally, being a major cultural and religious center in the 15th century, Mainz attracted scholars and artists, spurring the dissemination of printing technology to other regions. The city's connections to nearby cities like Frankfurt also helped to spread printing knowledge and products.