The Answer is B. Trade between Europe and byzantine empire.
Answer:
Because factories and farms were producing more than what people couyld get, there was no need for many workers at the time. They would be laid off as a result. Prices for farm products also fell, as a result, farmers could not pay off bank loans and many lost their farms due to foreclosure.
Explanation:
Gutenburg's printing press made books cheaper and available to a larger variety of people. Before the printing press, books were very hard to make and they took a long time to produce.