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Project Scotland brings the story up to date as after two world wars, economic collapse, mass emigration and a growing sense of national identity throw Scotland's role as a part of Britain into question.
Find out more Scotland in the 20th century in our Modern Scotland section and have your say in our online debate: does Scotland's destiny lie as an independent nation?
The book and music from A history of Scotland are now available to buy. The DVD of the complete series will be available from 1st February 2010.
More history from BBC Scotland:-
Have your say in our online debates
For great free video clips from BBC programmes