Here we link to some of the most important underlying research papers (by ourselves and others).
Noel Johnson and Mark Koyama, “The State, Toleration, and Religious Freedom”, Advances in the Economics of Religion, edited by Jean-Paul Carvalho, Sriya Iyer, and Jared Rubin, Palgrave 2018.
Noel Johnson and Mark Koyama, “States and Economic Growth: Capacity and Constraints” Explorations in Economic History, April 2017, Volume 64, Issue 2, pp 1–20 (link)
Noel Johnson and Mark Koyama, “Legal Centralization and the Birth of the Secular State”, Journal of Comparative Economics Vol. 41, 4, pp. 959–978 November 2013 (link)
Noel Johnson and Mark Koyama, “Taxes, Lawyers, and the Decline of Witchcraft Trials in France” Journal of Law and Economics, February 2014, Volume 57, Number 1, pp. 77-112 (link)
Mark Koyama, “Evading the taint of usury: the usury prohibition as a barrier to entry” Explorations in Economic History Vol. 47, 4, pp. 420-442 December 2010 (link)
Mark Koyama “The political economy of expulsion: the regulation of Jewish moneylending in medieval England” Constitutional Political Economy Vol. 32, 4, pp. 374-406 (link)
Warren Anderson, Noel D. Johnson, and Mark Koyama “Jewish Persecutions and Weather Shocks 1100-1800” Economic Journal, Volume 602, June 2017, pp 924-958 (link)
Theresa Finley and Mark Koyama “Plague, Politics, and Pogroms: The Black Death, the Rule of Law and the persecution of Jews in the Holy Roman Empire” Journal of Law & Economics, May 2018, Volume 61, Issue 2, pp 253-277 (link)
Remi Jebwab, Noel D Johnson, and Mark Koyama, “Negative Shocks and Mass Persecutions: Evidence from the Black Death” (link)
Jean-Paul Carvalho and Mark Koyama, “Jewish Emancipation and Schism: Economic Development and Religious Change” Journal of Comparative Economics, Vol. 44, Issue 3, August 2016, pp. 562–584 (link)
Jean-Paul Carvalho, Mark Koyama, Michael Sacks,“Education, Identity and Community: Lessons from Jewish Emancipation ” Public Choice, April 2017, Volume 171, Issue 1, pp 119–143 (link)
Noel D. Johnson and Mark Koyama, “Jewish Communities and City Growth in Preindustrial Europe”, Journal of Development Economics, Volume 127, July 2017, pp 339-354 (link)