School of Salamanca
The Church proved utterly unable to legislate against the "contractum trinius", and the idea quickly spread to merchants and bankers across Christendom. It was accepted by writers such as Gabriel Biel; it helped in part to improve public perception of the practice of usury by moneylenders, and ultimately the doctrine was rewritten by the School of Salamanca, and the ban on interest-bearing loans overturned in many Protestant countries, starting with England by Henry VIII.