User talk:116.49.121.45

January 2020
Hello, I'm Donner60. I noticed that you made a change to an article, Causes of World War II, but you didn't provide a source. I’ve removed it for now, but if you’d like to include a citation to a reliable source and re-add it, please do so! If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. Thanks. Donner60 (talk) 06:29, 12 January 2020 (UTC)
 * If this is a shared IP address, and you did not make the edits referred to above, consider creating an account for yourself or logging in with an existing account so that you can avoid further irrelevant notices.


 * As further information, please see What Wikipedia is not and Verifiability. Wikipedia is not a forum, blog, message board, or tabloid. It is an encyclopedia based on reliable, verifiable, third-party sources. It publishes sourced facts. It does not publish rumors, gossip, personal opinions, personal experiences, messages, commentary, promotional material, original research or unsourced information likely to be changed, challenged or disputed. See also Biographies of living persons, Five Pillars, Identifying reliable sources, Citing sources, Help:Footnotes, No original research, Manual of Style/Words to watch and Neutral point of view. For further information about contributing to Wikipedia, see: Referencing for beginners; Getting started; Introduction to Wikipedia; Simplified ruleset; Simplified Manual of Style; Help:Introduction to talk pages; Copyright Problems and Help:Contents. Thank you. Donner60 (talk) 06:31, 12 January 2020 (UTC)

February 2020
Please refrain from making test edits in Wikipedia pages, such as those you made to Charles K. Kao, even if you intend to fix them later. Your edits have been reverted. If you would like to experiment again, please use the sandbox. Thank you. Mojoworker (talk) 07:33, 18 February 2020 (UTC)
 * If this is a shared IP address, and you did not make the edits referred to above, consider creating an account for yourself or logging in with an existing account so that you can avoid further irrelevant notices.