Since Mars is really the first unclaimed stake we've had available to our planet in ages, what is preventing the human race from simply agreeing that whomever gets there first with a manned mission gets claim of the planet?
I mean, that sounds likely to cause violence earlier than would be necessary?
Why would nations respect such a claim? And if they did not respect it, and they sent people, and those people claimed a part, how would the dispute be resolved?
Mars is pretty big. Just, claim the part you are using?
that's not how it works. whoever gets there last keeps it. like all things, it's about power, if you can't protect it, it will forcefully be taken by violence or "legal" means.
