what country in the middle ages besides england didnt have a written constitution
Try reading your textbook.
Um, all of them?
You already have one thread open on this subject, which has been moved to GQ.
The United States of America
Well, Constitution requires Code of Laws, Civil Service, and Nationalism. So any countries that do not have all three prerequisites could not have reserached Constitution. They would have needed 2000 research points as well.
Closing duplicate thread.