Implementing geotargeting while using a single database

I'm working on a Wordpress site with a large amount of users in multple countries (UK, US, and sever African countries - Nigeria, Kenya etc). All our content is in English and we don't have the ability yet to re-do content for other areas. We do however have some small bits of content we'd like to show in certain areas of our site (free bets and special offers) dependant on country.

We've tried using server side detection of the user's location and showing the relevant free bets and offers, however we have server side caching which creates a static version of each page of the site every 30 seconds (meaning a user from Kenya could visit the site, triggering the cache and subsequently showing all users Kenyan free bets and offers for the next 30 seconds until the cache is refreshed).

To get around this we are suggesting implementing a url structure as follows:

• website.com (UK version)
• website.com/us/ (US version)
• website.com/ke/ (Kenyan version)
• etc...

The question I have is, how would this be implemented in the context of Wordpress while using a singular database for each country's 'site'?

Thanks