This question already has an answer here:
We built a website targeting different regions but with the same English language (Ireland, England and America). The content for the most part is the same set up on 3 different subfolders.
http://www.example.com/ - targeting the United States in WMT
http://www.example.com/ie - targeting Ireland in WMT
http://www.example.com/uk - targeting UK in WMT
Do I have duplicate content issues to be worried about?
If so, how do I get around this issue?
Also is there anyway of finding out if Google have in some way penalised these pages for having the same content on other pages trageting different countries? I have not received any messages from Google in WMT saying there is duplicate so I'm not sure if this is an issue.