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Hi! If with meta tags you mean Title Tag and Meta Description, the ideal should be to localize them in order to answer better to the peculiarities and cultures of the people living in the different and diverse country markets you are targeting. Because a British users does not think the same way as those living in the USA, and even more of those ones living in Hong Kong or In Geneva (apart that they use a different language). Localization will surely improve the CTR of the search snippets. Said that, I strongly suggest you to implement the hreflang annotations too, in order to be sure that Google will show the correct version of your site to each geotargeted market.