what group has tried inseccessfully to establish a nation since the breakup of the ottoman empire after world war 1?
The subject is history.
Since this is not my area of expertise, I searched Google under the key words "establish a nation since the breakup of the ottoman empire" to get this:
http://www.google.com/search?client=safari&rls=en&q=establish+a+nation+since+the+breakup+of+the+ottoman+empire&ie=UTF-8&oe=UTF-8
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.