Complex sentence: The High Middle Ages of Scotland encompass Scotland in the era between the death of Domnall II in 900 AD and the death of king Alexander III in 1286, which was an indirect cause of the Scottish Wars of Independence.
Split into simpler sentences: The High Middle Ages of Scotland encompass Scotland in the era between the death of Domnall II in 900 AD and the death of king Alexander III in 1286. Alexander's death was an indirect cause of the Scottish Wars of Independence.