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Apple told to pay back €13bn in tax by EU
(www.bbc.com)
This is a most excellent place for technology news and articles.
As i see it, not an expert:
Basically, the plan goes back to the early 2000s. Irland did not have much tech industry and positioned itself as an English speaking country cheaper and more friendly than the UK, giving mostly US companies an easy place to enhance their EU business.