Who served as the Governor of New Orleans for Spain with an iron fist after the transition of power?

The Governor of New Orleans for Spain who is renowned for serving with an iron fist after the transition of power is General Alexander O'Reilly. After Spain regained control of New Orleans from France in 1763, O’Reilly was appointed to establish Spanish authority in the region. He implemented strict measures to assert Spanish rule, curbing the influence of Creole aristocracy and enforcing new regulations designed to integrate the local government into the Spanish colonial system.

His leadership style reflected a no-nonsense approach as he sought to eliminate any opposition and strengthen the Spanish foothold in Louisiana. He is particularly noted for his efforts in reorganizing the administration and military presence, as well as for his harsh treatment of individuals involved in the insurrection known as the "Great New Orleans Conspiracy." This firm governance helped stabilize Spanish authority in a critical transition period for the colony.

Other individuals listed, such as Don Antoine de Ulloa and Pierre Le Moyne d'Iberville, either predate O'Reilly's rule or had significantly different governance styles. Ulloa, for example, had a more lenient leadership but faced major challenges during his administration, while d'Iberville played a role in the establishment of French Louisiana well before the Spanish takeover. Louis XV was