Not sure if this is the correct category for this post. My aplogies if I error. 10 years ago I had a site that I closed but can still find archived in the WayBackMachine. The content was original then and posted new by me. I am wondering if Google would penalize me for adding the old content to my new and only site? Many Thanks for your help and Have a Great Sunday!
This is more a question for the SEO section. And to be honest I would not know the answer at your question. But what I would recommend is just rewrite 20-30% of your text then it is 'original' for sure. This is maybe required anyway due new information and you migh need to optimize the text for keywords.