Dinosaurs didn't even have the physical bodies to perform complicated mechanical construction. How can you think they had a civilization?
But they did. Bifurcating/Trifurcatuing claw structures combined with sufficient intelligence are more than enough to perform complex manual operations. I know this because in one of my Flat Earth seminars I taped some of my fingers together (in a similar configuration to the hands of dinsoaurs) and demonstrated that writing, hammering, holding a screwdriver and many other tasks could still be accomplished with the same degree of competency.
Also note that if they were civilized, there would be wars.
Is this a given? There are examples of early human societies where organized war was pretty much a non-issue.
I haven't heard of any fossils turning up with bullet wounds in the bone structure (inevitable even if they didn't have wars).
Ballistic technology isn't a prerequisite for civilization.
Or any other type of wound caused by anything other then teeth and natural disasters.
Even if dinosaurs did engage in war, how would a wound caused by a spear, blade or simple projectile be distinguishable from damage caused by teeth and natural disasters?
Now what I HAVE heard is that there is a Sphinx on Mars.
This is crazy-talk.
What if humans had originally started on Mars, and escaped whatever disaster occured there to settle on Earth but technology failed in transit and we ended up starting all over again on Earth? Mars has alot of rust on it after all.
Conventional space travel is impossible. Also I'm pretty sure you stole this idea from the film "Mission to Mars".
What's more, even if we assume space travel is possible, how would people reach Earth if the technology failed in transit?
Also, if mankind had been sufficiently advanced to travel in space, they would almost certainly have developed a complex system of language and writing. Why then, instead of finding illuminating science textbooks and epic poems on cave walls do we find crude drawings of animals? Technological and philosophical knowledge doesn't just instantly disappear. Unless the first settlers of Earth were all newborn infants, elements of Martian culture and science would have most certainly been passed down through generations.
How did similar technology spring up world wide at almost the same time? Back before people knew a North America/South America existed?
Quite simply, it didn't. The Egyptians and Babylonians made use of wheels, for example, long before the Native Americans did (I'm not even sure if they ever did until the Trail of Tears brought wheel-technology to America in the 1700's). The orient developed gunpowder and other such technology well in advance of the rest of the world. Examples like this are rife throughout history.