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While there are SEO's on Moz who can answer this question... it is to over broad. It would appear you have not done any type of project close to this in the past from how you have posted the question. If I am simply missing this due to the language difference you have my sincere apologies.  A multi region or multi language website is a very complicated endeavor if you have not done it before and I would suggest getting assistance from an agency that handles these. The only other suggestion is to go into WMT and read on multi region/multi language sites and possibly post questions there as well. Sorry, and I wish you the best, Robert

Thomas has a lovely answer. I'll just throw in that sites that have the top-level domain like .edu or .gov tend to have very good trust scores. Links from these sites will earn you more MozTrust.