At one time, Gaelic Scotland - the people and the language - was central to the collective identity of Scots.
But as Neil Oliver reveals, Scotland's infamous Highland/Lowland divide was the result of a family struggle that divided the kingdom.
This is the story of how the centralising policies of the Stewart royal family in the 15th century led to the Gaels being perceived as rebels and outsiders.
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Ready to Watch A History of Scotland, Season 1, Episode 4?