Duplicated posts: how to avoid?

Hello,

I have two languages active on my website (dutch/english). When english language is actived I would like to view blog posts in dutch.

– I copied the blog page to english version, otherwise the footer widgets are not translated;
– When editing the english version blog page it’s not possible to choose the dutch blog category;

Is it possible to show the dutch (default) blog category posts on the english blog page? Right now I’ve created a English blog category and duplicated all posts into that category. Is there a way to show dutch blog category on the english blog page?

I would like to select the dutch post category here so I don’t have to duplicate every post:

Now I have to duplicate every post in both language. Is there a way to show dutch posts in both languages?

I really hope my explanation is a bit clear.. ??