After Theoduses II codex and Valentine II in 432, where
frame how Christianity will in the Roman Empire established , one of the
fundamentals was Emperor choice by God, to have this direct connection, the
claim—a tradition from Nero to others was the Roman Emperor was a God, here
the claim was less, but the chosen was frame in Hebrew Bible, because that one
of the many rules to constrain the Jews, were not a lot to own slaves.
While Antisemitism of the Roman Catholic Church was vicious
and harsh, Martin Luther in 180 pages rant against the Jews in the Jews on his
Lies set the the ground work wish in the Protestant and specially Germany,
with secularization of Antisemitism, because that and many other factors the
Jews become permanent outsiders is described by Arendt in the Origin of Totalitarianism described the secularization.
The slave trade in the west of Africa, small scale, was accepted by Islam, specially regarding pagans, the trade was encouraged, when Portuguese encounter in west Africa the slave traded, established is trade my Arabs, the mass scale was accepted, not only by Portugal, Spain eventually British, while Spanish slave trade, basically was based to the last slaved standing as described by Gates Black in Latin American, 2011 New York University Press, while the British North America Colonies the trade pick at 500,000 Slaves, the Portuguese and Spanish colonies brought 11 Million Slaves, which majority did not survived the institution.
The trade was limited only to Christians, Hugh Thomas in The Slave Trade, The Story of the Atlantic Slave Trade 1440-1870, 1997 Simon & Schuster, made clear from the Transport, the capture, where done in Kingdom of Bennie or other in West Africa, but the purchase, transport and sell only Christians allot, not Jews (or Practice the Jewish fate) were a lot to participated in the trade, when new Christians began to be involved the inquisition got involved and stop in the tracks 1667 Grillo Curacao, where while Jews were allot practice their fate openly, the inquisition made sure the other end of the trade--1670, will not beneficent the Jews or the New Christians--One of big traders ended with Auto fe in 1633 in Seville (Antonio Lamegos) for being decedent of New Christians.