Who own Mars anyway?

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My 1st post*_*, be nice to me OK, me speak no english. Back to the question. Who own Mars anyway? We know theres a lot of countries trying to explore the solar system. Some send robotic, probes, whatever they call it. Now a question linger, supposed a country manage to land and colonised Mars (not moon, mars, moon was for sale some years ago), can that country claim this _planet_ is our 55th state?. What about Tuvalu or (insert some under develop country here) which have no space program?. If the colonising country can't claim "ownership" can they tap the resources (metals mining perhaps)? Who actually have control over Mars and its lands? What about the 2nd country that land there? Even if the Mars lands are to be divided to some calculated distribution ratios, where it should start? and who regulate the distribution? UN might be the answer, but ... what about "we land 1st, we have the full rights over XXX region, we are superior and will not listen to anyone else" attitude? Yeah I know its still far away, but its possible isn't it?. Your answer? ps: I hereby officially claim that I OWN Mars and its ecosystems and since I'm the 1st human to say that, its entirely mine.