How can I manage duplicated blog posts across multiple markets?

[Splodge1]

Hi,
We setup Shopify markets, the Primary Market is United Kingdom and we have 9 other country markets. The problem is that we have over 525 blog posts and these are now duplicated on all these sub folders. Can you suggest the best way to manage this to avoid duplication, can we canonicalise these to the primary market urls or noindex them?
Thanks

[KevinDougans]

In a similar predicament just now.

I think I'm gonna add noindex to the 3 new markets sub folders but not sure how manageable once we're in 20+ markets.