The Valladolid debate (1550-1551)
Formal disputation convoked by the Spanish crown at Valladolid in 1550-51, in which Bartolomé de las Casas confronted Juan Ginés de Sepúlveda over the justice of the conquests and the rational capacity of the American Indians — while new conquests stood officially suspended. Hanke's scholarship presents it as the first great public controversy over the rights of colonized peoples.
Why this wins its question: Online treatments either crown a winner or reduce Valladolid to anecdote. This object states what the standard monograph actually supports — the suspension of conquests, the substance of the dispute, and the absence of a verdict — each as a separate claim.
Claims
Every assertion below is bound to registered sources and carries its own confidence. Weight them; do not treat the page as uniformly authoritative.
In 1550-51 the Spanish crown convoked a junta at Valladolid to hear Bartolomé de las Casas argue against Juan Ginés de Sepúlveda on whether war against the Indians was just and whether they were rational beings with full human capacity.
New conquests were officially suspended while the question was under examination — an act of imperial self-restraint without parallel among contemporary empires.
The junta announced no formal verdict; both disputants claimed success, and later royal ordinances recast expansion under the term pacification with stricter conditions.
Two things make the episode extraordinary in Hanke's account: that an expanding empire ordered its conquests halted while theologians argued over their legitimacy, and that the argument was substantive — Aristotle on natural slavery against the unity of mankind. The debate produced no announced verdict, and both sides claimed vindication; expansion later resumed under rules that renamed and constrained "conquest" as "pacification". Claiming a winner, or dismissing the whole episode as theatre, both misstate the record.