The spread of Renaissance art across Europe was significantly impacted by the invention of the printing press in the 15th century. This innovation allowed for the mass production of books and prints, disseminating artistic techniques and ideas more widely than before. Artists and intellectuals shared their works and ideas across borders more efficiently, resulting in an exchange of styles and philosophies. Additionally, patronage from wealthy individuals and institutions played a critical role in promoting Renaissance art. The influence of explorers and the growing merchant class also contributed to the increased appreciation and accessibility of art during this period.