What shows that the ancient Britons believed in a future state?

哪些方面显示了古代英国人相信有来生？

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The ancient Britons inhabited these parts of England before the Roman invasion.

在罗马人入侵之前，古不列颠人居住在英格兰的这些地区。

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Welsh people could lay claim to be the most ancient Britons, according to scientists who have drawn up a genetic map of the British Isles.

BBC: Welsh people could be most ancient in UK, DNA suggests

Stirling Council archaeologist Murray Cook said the fort was occupied at a time when mainland Scotland was ruled by the ancient tribes of Picts, Celts, Britons, and Angles.

BBC: Archaeologists probe Abbey Craig secrets