Did the Celts move to the British Isles for any particular reason, or just normal expansion?

1) "Genetic studies have supported the prevalence of native populations, ruling out any model of post-Bronze Age cultural and language intrusion that ignore a very high degree of genetic absorpsion. A study by Christian Capelli, David Goldstein and others at University College, London showed that genes associated with Gaelic names in Ireland and Scotland are also common in certain parts of Wales and England (in most cases, The Southeast of England with the lowest counts of these genes) are similar to the genes of the Basque people, who speak a non-Indo-European language. This similarity supported earlier findings in suggesting a large pre-Celtic genetic ancestry, likely going back to the Paleolithic.

They suggest that Celtic culture and the Celtic language may have been imported to Britain by cultural contact, not mass invasions around 600 BC." "The Celtic invasion of the British Isles is difficult to document genetically. Two published books - The Blood of the Isles by Bryan Sykes ... more.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.