The Bubonic Plague killed more than 60% of Europe's population, causing a labor shortage. As a result, people needed to create ways to make up for that shortage, which came with innovation and technology.
Although for a time the bubonic plague stunted the growth of many places, especially Europe, after the major outbreaks had passed, places in Europe thrived. Less people meant more resources for the remaining population. Due to fewer workers, workers became much more valuable. As a result, wages increased considerably. There was much more food for the remaining people which meant less people starved. These factors put together opened up opportunities for people to move up in the social classes. The standard of living overall was vastly improved which contributed to innovation and led to the emergence of the reissuance.