There are both dumps with full history and ones that are just the current set of articles. The full dump happens once a month on the 1st, but will often take ~2 weeks to run to completion, so you probably have to look back to the April 1 2025 dump for those. The metawiki dumps page has all the info.
Remember to download a backup while information quality is still passable
https://dumps.wikimedia.org/backup-index.html
It’s not for use in editing articles.
Do these backups also contain the edit histories?
There are both dumps with full history and ones that are just the current set of articles. The full dump happens once a month on the 1st, but will often take ~2 weeks to run to completion, so you probably have to look back to the April 1 2025 dump for those. The metawiki dumps page has all the info.