i did nothing .... just get on line and facebook opened in sign in page not like usual ... so i did click on log in and FB brought me a message that my account was disabled ... for me it was very strange
We disable Facebook accounts that don't follow the Facebook Terms. Some examples include: Posting content that doesn't follow the Facebook Terms. Using a fake name. Impersonating someone. Continuing behavior that's not allowed on Facebook by violating our Community Standards. Contacting other people for the purpose of harassment, advertising, promoting, or other conduct that's not allowed. ** I copied this from their help page. Check out their ToU see if that answers your question.
The same did happen to me also and there is no way to bring FB id back if it is disabled by Facebook. FB disabled my personal id and when I report for the same they asked me to upload my ID proof and I did the same but they didn't respond. I made 3 or 4 reports in 3 months but got no response from the Facebook team. After 3 months I reported again for the same and they respond to me on my Gmail Id and said disabled Ids can't be enabled again and they deny me to give reasons why my ID is disabled, And then I created a new ID.