The first 2 parts seek to reduce to absurdity the rise of wasteful wars and rule by nationalist barbarians. The 3rd part speculates that progress and exploration toward the moon and beyond is the key to ensuring a meaningful use of human talents and resources. It has speeches that some viewers dismiss as naive or bombastic but that make others tingle with excitement. It depicts a space gun/launcher and a helicopter, along with inventive mass communication devices, elevators, flat screen panels, and wireless intercoms. It's probably incorrect about windowless buildings in the future. But it portrays a child-like vision of boundless scientific/technological investigation.
To me, it seems like a movie about a group of rational minded thinkers guided by a Spinozean-like morality in their quest to immortalize themselves and live ethically through scientific advancement and a unified world government. The pro-progress characters (such as the two Cabals) believe humanity could 'live forever' by preserving our experiments and progress for future generations, always standing on our humanity as if on the shoulders of giants.
Arthur C. Clarke (author of 2001: A Space Odyssey) suggested this film to Stanley Kubrick as an example of an excellent SF movie. Kubrick hated it and said he would never watch another movie based on Clarke's suggestions (source: Clarke's special millennial introduction to his 2001 novel). Though the late Clarke kept suggesting it at the top of his list whenever someone asked him about the best SF movies. It has a beautiful Menzies art design, but mediocre special effects (esp. the toy tanks).
I personally loved it and think it excellently captures the zeitgeist of modernity. It is a bit naive about the plausibility of creating a society without crime for an extended period of time. It also seems implausible about the inevitability of progress. It seems to me we could just as easily go right back to the dark ages or at least become so stagnant in science that we kill ourselves off through overpopulation or through our inability to escape the next major natural disaster. But it nicely portrays the importance of taking risks against public and nanny outrage for potential threats of space accidents and deaths. It challenges us to choose the side of progress over petty desires for safety or comfort or happiness:
CABAL: "Too much {rest} and too soon, and we call it death. But for MAN no rest and no ending. He must go on--conquest beyond conquest. This little planet and its winds and ways, and all the laws of mind and matter that restrain him. Then the planets about him, and at last out across immensity to the stars. And when he has conquered all the deeps of space and all the mysteries of time--still he will be beginning."
CABAL: "If we are no more than animals--we must snatch at our little scraps of happiness and live and suffer and pass, mattering no more--than all the other animals do--or have done." {He points out at the stars.} "It is that--or this? All the universe--or nothingness..." (quotes from screenplay).
If this sounds like a rationalization for devoting all of society to progress, then the council members (of the world government) will seem like technocrats. But actually those "technocrats" allow their citizens to become artisans or pursue other passions freely, and they would have to be suppressed by government bans, laws against science and experiment, and other mandates and restrictive uses of power that would turn their critics into tyrants.
In fact a huge group of rebels in the plot feel belittled by all the council's developments of science and technology, so they try to put a stop to progress and an end the council's freedom to experiment. The progress oriented council will not suppress the free speech of the rebels though, only preparing its 'peace gas' in times of emergency and merely wanting the freedom and space to pursue its progress.
So it's also a story about the freedom to do science, just as much as it's about the wonders of progress. Many people in our society would actually agree with some of these basic premises, except in cases of social bias (many want to ban cloning, for example) or naturalism (some don't want us to progress freely, and would rather we just become extinct in due time while enslaved to the earth) or fear/reason (some believe we aren't ready for advanced science/technology since we might destroy ourselves). But Cabal (the president of the council) has an answer to the problem of danger: "Our {scientific} revolution did not abolish death or danger. It simply made death and danger worth while" (screenplay).

Tyrannosaurus Azteca is set during the sixteenth century where famous Spanish explorer Hernando Cortes (Ian Ziering) has landed in Mexico with six of his best men including Lieutenant Rios (Marco Sanchez), they intend to claim the land in the name of the Spanish & maybe steal some gold too if the opportunity arises. Within minutes they have their first sight of local Aztec savages, within minutes after that Cortes & his men are captured & held prisoner. If that wasn't bad enough it turns out that a couple of Tyrannosaurus Rex live there & like to eat the locals, in an effort to win their lives the Spanish offer to help the locals get rid of their monster problem but with various hidden agendas & ulterior motives it's not just the dinosaurs they have to watch out for...
Directed by Brian Trenchard-Smith (who, coincidently, made one of my all time favourite exploitations films Turkey Shoot (1982) which I throughly recommend to one & all) & also more commonly known under the spoof sounding title of Aztec Rex (the title was changed by the Sci-Fi Channel when they aired it maybe as the original title Tyrannosaurus Azteca sounds like it might be a foreign film) this is yet another idiotic & cheap looking Sci-Fi Channel 'Creature Feature' & that's all you need to know really. Based on & around the real Spanish Conquistador Cortes during his expedition to Mexico the film definitely doesn't strive for historic accuracy although I will admit that the story tries to do something slightly different here but ultimately Tyrannosaurus Azteca is still just a 'Creature Feature' with a bunch of people running from some poor CGI computer graphic of a monster despite it's period setting. Not too sure what else I can say, despite being set centuries ago the usual clichés are here, the character's are the usual cardboard cutouts, make stupid decisions & the selfish one, the heroic one, the backstabbing one, the faceless victim who exists just to get eaten & the pretty woman are all here & easy to spot. The film is predictable, silly, dull & doesn't really entertain on any level although it does move along at a decent pace & there's one or two half decent moments of gore if that sort of thing interests you. The story isn't that good & has plenty of holes too, this is also the sort of film that you will have completely forgotten about within a few days.
Now I have seen & commented on plenty of Sci-Fi Channel 'Creature Features' & usually the CGI computer effects are terrible & while Tyrannosaurus Azteca doesn't exactly buck the trend I will admit there are a few effects shots which look alright but then they are usually ruined by an absolutely awful effects shot straight afterwards. There's a few decent gore effects here too, there's a cut out heart, a guy's leg is bitten off, there's some blood splatter, a cool shot of a guy left holding his own intestines after he has been attacked by the dinosaur, there's a few dead bodies seen & someone is stabbed with a spear. The T-Rex gets to eat a couple of people too. The production values are really cheap, the Aztec set looks like one of those theme park attractions made from Styrofoam & those Spanish men must have been imprisoned in the worst enclosure in cinematic history with the fence supposedly keeping them in lower than a mans waist, they could have simply stepped out of it & run away it was so low.
With a supposed budget of about $900,000 I can't see where the money went, shot in O'ahu in Hawaii in apparently fifteen days. The acting isn't great from no-one I have ever heard of.
Tyrannosaurus Azteca really isn't any better than any other cheap Sci-Fi Channel 'Creature Feature' despite an almost interesting & unusual premise, that basic statement should basically be enough for you to decide whether you will enjoy this or not (at a guess probably not).