" Even worse, greedy bosses might curtail the workers’ freedom of movement through debt peonage or slavery. At the end of the Middle Ages, slavery was almost unknown in Christian Europe. During the early modern period, the rise of European capitalism went hand in hand with the rise of the Atlantic slave trade. Unrestrained market forces, rather than tyrannical kings or racist ideologues, were responsible for this calamity. "

― Yuval Noah Harari , Sapiens: A Brief History of Humankind