Editing 1917 (section)

=== February ===
{{main|February 1917}}
* [[February 1]] &ndash; WWI: [[Atlantic U-boat campaign of World War I|Atlantic U-boat Campaign]]: [[German Empire|Germany]] announces its [[U-boat]]s will resume [[unrestricted submarine warfare]], rescinding the '[[Sussex pledge|''Sussex'' Pledge]]'.
* [[February 3]] &ndash; WWI: The United States severs diplomatic relations with Germany.
[[File:USA bryter de diplomatiska förbindelserna med Tyskland 3 februari 1917.jpg|thumb|200px|President Woodrow Wilson of the United States announces to Congress the breaking of diplomatic relations with Germany]]
* [[February 12]] &ndash; [[Deportivo Toluca F.C.]] is founded as an Association football club in Mexico.
* [[February 13]] &ndash; WWI:
** [[Mata Hari]] is arrested in Paris for spying.
** [[Raid on Nekhl]]: Units of the [[Egyptian Expeditionary Force]] completely reoccupy the [[Egypt]]ian Sinai Peninsula.
* [[February 21]] &ndash; British [[troopship]] {{SS|Mendi}} is accidentally rammed and sunk off the [[Isle of Wight]], killing 646, mainly members of the [[South African Native Labour Corps]].<ref name="Mendi">{{cite web |url=http://www.navy.mil.za/newnavy/mendi_history/mendi_hist.htm |author=SA Legion – Atteridgeville Branch |title=The SS Mendi – A Historical Background |work=Navy News |publisher=South African Navy |access-date=20 November 2008 |archive-date=March 5, 2012 |archive-url=https://web.archive.org/web/20120305223813/http://www.navy.mil.za/newnavy/mendi_history/mendi_hist.htm |url-status=dead }}</ref>
* [[February 24]] &ndash; WWI: [[Walter Hines Page]], United States ambassador to the United Kingdom, is shown the intercepted [[Zimmermann Telegram]], in which Germany offers to give the American Southwest back to Mexico, if Mexico will take sides with Germany, in case the United States declares war on Germany.