Is there an expiry date of books copyright?

Factual Questions
1

So?

Could I print my own copy of the Musketeers and sell it for profit; or is there still someone who owns the copyright for such classical books?

What about the traductions? If I traduct myself the Musketeers in english; could I sell it for profit and call it “The Three Musketeers”

Finally, would I have to copyright my traduction and if so, this new copyright will be effective for how long?

thanks a lot

2

oops, I thought that it didn’t get through the first time;

could a mod please close this thread and let the other one.
thanks