Empire which was revoked due to being an illegitimate and genocidal regime. Your argument suggests they should be allowed to re-steal now what they would have stolen back then.
No, I'm not saying that they should be allowed to re-steal. I said that I don't care about a shipwreck, but the spanish government has been known to claim this kind of finds in the past because technically that is a Spanish ship and legal precedents exist.
Also, all the global empires have been built on the same coercive foundation, and that doesn't make them "regimes".
The reduction of the North American Indian population from an estimated 12 million in 1500 to barely 237,000 in 1900 represents a"vast genocide", the most sustained on record.
Also, all the global empires have been built on the same coercive foundation, and that doesn't make them "regimes".