Historically accurate

Did that society notice that Pedro consistently refers to la Santa Inquisicion as la Santa Hermandad, which was a rural police that preceded the modern day Guardia Civil?

Back in the 40's historical movies were extremely inaccurate. Hell, even movies which took place in the current year butin different countries are full of inaccuracies. Look at Casablanca. It is a masterpiece, but the map shows Casablanca in the site of Tangiers and depicts an unrealistic French tricolour with Islamic crescent and star as the flag of French Morocco.

I had not seen the movie yet, but I don't expect much accuracy. The whole plot involving the Inquisition in the conquest of the Aztec Empire isn't realistic at all. The first Inquisition "house" in Mexico wasn't opened till 1571, 50 years after the fall of the Aztecs.

In case anyone is still wondering, in response to the OP, yes, the DVD does have this esteemed honor, and that organization was the National Museum of Mexico.

BTW, I'm a geography/history buff (and I am of Spanish descent), with enormous interest in Latin American history, including its 3 major pre-Columbian empires -- the Aztec, Maya, and Inca (South America) -- and I was honestly amazed by how incredibly accurate this film was down to even the most minute detail, seen in the film the 1500's both in Spain and in the Aztec Empire, encompassing everything from accurate architecture, way-of-life, clothing, and even the Nahuatl language spoken by the Aztecs (between Dona Marina and the ambassadors of Emperor Moctezuma) in this film (which btw is still spoken by the around 1.5 million direct descendants of the Aztecs in the part of modern Mexico formerly occupied by the Aztec Empire), as well as the interjection of Spanish words, phrases, and sentences by the Spaniards in the film. This film really got things right, which many other films have attempted to do and failed miserably -- one relatively recent example being the atrocious APOCALYPTO, depicting the Maya empire innacurately as violent savages, without understanding that they, like the Aztecs after them, were in actuality a highly advanced civilization with MANY, MANY coincidental parallels with Spain halfway across the world (which, of course, would collide in the 1500's as seen in this film with the arrival of Spanish explorers in Aztec Mexico). One of the many nice touches in this EXCELLENTLY done film, btw, was this -- notice in the village temple (pyramid) room Pedro keeps guard in, there is sacrifical blood in front of the religious idol, and, late in the movie, there is blood stained on the side of a town pyramid (temple) steps -- this is because Aztec priests used to sacrifice (100% willing, self-volunteering) Aztec people to nourish the gods that they believed in (in turn, in their belief, sending blessings to the greater good of their people/civilization) at the top of the pyramid steps -- antoher nice touch of accuracy. Also the buildings seen in the Aztec Empire towns and villages were 100% accurate -- made of adobe painted a certain color (which btw is also common in Spanish construction, as wee see in the Spain-set portion of the film) though (in the Aztec Empire unlike in Spain--) with (lime-sealed) roofs topped with thatched straw.

This is a fantastic film not only in terms of its amazing historical and cultural accuracy, however. I also found it riveting at every unexpected turn, as well as meaningful, and is, IMHO a one-of-a-kind cinematic treasure. Its production quality is also INCREDIBLY advanced, making it difficult to believe that it was released all the way back in 1947.