The Northern Renaissance began in the 15th century as ideas from the Italian Renaissance spread north. Key developments included the end of the plague, growth of cities and merchant wealth after wars, and artists studying in Italy and spreading new techniques. Northern rulers hired Italian artists, and ideas spread through invasions and artists moving. Flemish and German painters like Van Eyck, Durer, and Bruegel gained prominence. Northern humanists like Erasmus and More sought to reform society through education and Christianity. Gutenberg's printing press mass-produced books and spread Renaissance ideas across Europe.