Hello, and welcome to Wikipedia. This is a message letting you know that one of your recent edits has been undone by an automated computer program called ClueBot NG.

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• The following is the log entry regarding this message: Fall of Constantinople was changed by الطبيب الراحل.23 (u) (t) ANN scored at 0.862135 on 2012-10-11T09:12:56+00:00 . Thank you. ClueBot NG (talk) 09:13, 11 October 2012 (UTC)[reply]

Your recent editing history shows that you are currently engaged in an edit war. Being involved in an edit war can result in your being blocked from editing—especially if you violate the three-revert rule, which states that an editor must not perform more than three reverts on a single page within a 24-hour period. Undoing another editor's work—whether in whole or in part, whether involving the same or different material each time—counts as a revert. Also keep in mind that while violating the three-revert rule often leads to a block, you can still be blocked for edit warring—even if you don't violate the three-revert rule—should your behavior indicate that you intend to continue reverting repeatedly.

To avoid being blocked, instead of reverting please consider using the article's talk page to work toward making a version that represents consensus among editors. See BRD for how this is done. You can post a request for help at a relevant noticeboard or seek dispute resolution. In some cases, you may wish to request temporary page protection. DeCausa (talk) 09:17, 11 October 2012 (UTC)[reply]