Facebook’s Off-Facebook Activity tool gives users more control of their data collected by Facebook. The tool was initially introduced as “Clear History” and only available to users in Ireland, South Korea, and Spain for testing. Users can see a summary of what information Facebook holds on you based on other apps you used or websites you’ve visited and also lets you delete it from your account if you want to. It’s important to note that the feature doesn’t actually allow users to delete their browsing information from Facebook servers. It simply lets users dissociate collected data from their Facebook account.
Source: https://thehackernews.com/2020/01/off-facebook-activity-data.html