User talk:213.205.198.21

November 2017
Hello, I'm Optakeover. I wanted to let you know that I reverted one of your recent contributions —the one you made with this edit to History of education in the United States— because it did not appear constructive. If you would like to experiment, please use the sandbox. If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. Thanks. Optakeover (U)(T)(C) 10:50, 12 November 2017 (UTC)

May 2021
Please refrain from making unconstructive edits to Wikipedia, as you did at Silas Katompa Mvumpa. Your edits appear to constitute vandalism and have been reverted. If you would like to experiment, please use the sandbox. Repeated vandalism may result in the loss of editing privileges. Thank you. Djm-leighpark (talk) 08:00, 1 September 2021 (UTC)

September 2021
Hello, I'm Djm-leighpark. I noticed that you added or changed content in an article, List of steepest gradients on adhesion railways, but you didn't provide a reliable source. It's been removed and archived in the page history for now, but if you'd like to include a citation and re-add it, please do so. You can have a look at referencing for beginners. If you think I made a mistake, you can leave me a message on my talk page. Thank you. Djm-leighpark (talk) 07:53, 1 September 2021 (UTC)

August 2022
Such content is by Wikipedia and as such may be hidden from public view at any time by an administrator (or in extreme cases, suppressed by oversighters). Articles or files of which the only purpose is to attack, harass, threaten or disparage certain people or groups are speedily deleted. If you add hateful, derogatory, or bigoted content again, you may be without further notice. AlanTheScientist (talk) 22:59, 13 August 2022 (UTC)

This is your only warning; if you vandalize Wikipedia again, you may be blocked from editing without further notice. AlanTheScientist (talk) 22:59, 13 August 2022 (UTC)

 Anonymous users from this IP address have been blocked from editing for a period of 1 week to prevent further vandalism. If you think there are good reasons for being unblocked, please read the guide to appealing blocks, then add the following text below the block notice on your talk page:. Kinu t/c 23:10, 13 August 2022 (UTC)
 * If this is a shared IP address and you are an uninvolved editor with a registered account, you may continue to edit by logging in.