Complex sentence: Poetry in Scotland includes all forms of verse written in Brythonic, Latin, Scottish Gaelic, Scots, French and English and any language in which poetry has been written within the boundaries of modern Scotland, or by Scottish people.
Split into simpler sentences: Poetry in Scotland includes all forms of verse written in Scotland or by Scottish writers. It includes literature written in Brythonic, Latin, Scottish Gaelic, Scots, French and English and any language in which poetry has been written within the boundaries of modern Scotland, or by Scottish people.