How to make my wordpress site Multi-region

You can use plugins like WPML, Polylang, etc. for this. And it is not like creating duplicate pages. You don't need to manage different pages.

You can translate manually or automatically.

If you are using manual translation, then you can translate word by word or paragraph by paragraph. And you will have a separate place for that where you can input translation for the content. And this is not like managing different pages.

example.com/test - Original version

example.com/en/test - New version

For every language your URL will be different but that doesn't mean you have to manage duplicate pages.

Also, you can use JSON for translating without using a plugin. But it would be difficult to manage. This is the github link. Thank you

I do the exact same as what you require using PolyLang on my e-commerce store. The store is mainly used by foreigners, but is based in Thailand. So the website uses the default language of English, but has the option to switch to Thai. If the user switches to Thai, a Thai version of the page is display instead with different content. (I swayed away from these auto page translators as Google Translate for the Thai language is not very accurate for any sentence that contains more than 4 or 5 words!)

Depending on the language selected, both the product pages, additional pages, the home page and the menu can be fully customised with a different look, if that is what you desire.

Also, if some pages will be the same on both versions of the site, then no country (Or region) extension is required.

For example:

www.mysite.com/co/some-page-1

and

www.mysite.com/mx/some-page-2

But...like you previously stated, there still is no way to reuse pages so the some-page-1 will display whichever countries content. Another page has to be created for each language's different content unfortunately. This is a bit of a pain I must agree.

The above two pages would have different content suitable for each location, however a Frequently Asked Questions page could be placed like this:

www.mysite.com/faq

No co or mx location extension needed. Just a simple page that can be added to the menu. The link on the menu would direct to the same page. This defeats having to create a FAQ page for 50+ regions if they are all going to be duplicates of one-another.

Hope this helps!

I don't think that it is possible or suggested to do it without duplicated pages, but I know that with the WPML plugin you can keep in sync duplicated versions.