PHD: Same core idea but in context of different country? I am thinking of carrying out PHD research in a subject in context of my country. But, I found out that the same topic (or same issue) has been researched by somebody else in context of his country i.e. “xyz in abc country”. It’s not a scientific research and most of the research work-findings are based on his specific country which is relatively different than my country. So, though the core research idea is same, overall contexts are totally different. I am planning to research on “xyz in context of my country”.

So, can I do it? Any suggestions?

I am bit concerned as I was thinking of similar qualitative and quantities research methodologies (off course in different country), so overall structure, especially literature review part (references) may look somewhat similar in some places (as it is study of same core thing but in different context). 
How may potential supervisor perceive it? (Acceptance?) 
What about overall value of research?

I am confident that research will add value to knowledge in the industry as it has not been done in context of my country (context) before. Findings may be useful also for countries (context) similar to mine.
Or I can also expand the focus of study to two countries-not that country the research was done (making it bit wider). But that may complicate the things. 

What may be a better idea?
What do you suggest?

Edit: I am NOT saying that only locations will be different or not that same thing will be researched again. It will be more like 'challenges for x in xyz country' and 'challenges for x in abc country'.I have been using word 'different context'. Only problem is the study is about 'challenges for x' which may overlap in some places. Challenges, research responses, finding may be totally different.
The scientific significance of the work really depends on what the nature of the subject is and how much value is added by doing the additional research.  For two extremes, consider:


A study on the effect of GMO feed on pigs in Freedonia, using the same methodlogy as a just-completed study of the effect of GMO feed on pigs in the Duchy of Grand Fenwick: low value, because there is no reason to think pigs will react to the same food differently in two different places.
A study quantifying the size of difference economic sectors in Freedonia (which has not been previously/recently studied), using the same methodology as a just-completed study of the Duchy of Grand Fenwick: high value, because countries typically have different economies, and understanding a country's economy is very valuable for planning policy.


You can evaluate the value of your proposed contribution similarly, by asking how much there is expected to be a difference, and how much knowledge your study will add.  Your advisor can then help you further tune the scope for their expectation of an appropriate amount of work for your dissertation.