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You need definitely to check this article: https://moz.com/blog/hreflang-behaviour-insights https://moz.com/blog/open-source-library-tool-check-hreflang and fix 302 with correct hreflang annotations. Also don't forget default language. About linkbuilding. After you fix this "hreflang" then you should do both - building links for main (default) language and build links for country languages from country specific resources. Like french sites linking to french directory/pages.