I want to know the answer to the following question:
When did Thomas à Kempis die?
All the background I'm provided with is that "Mystics such as Meister Eckhart (d. 1327) and Thomas à Kempis (d. 1471) wrote works that taught the laity to focus on their inner spiritual life, which laid the groundwork for the Protestant Reformation.". Is that enough to answer the question?
Answer: yes