https://en.wikipedia.org/wiki/1917#Events
1917
1917 (MCMXVII) was a common year starting on Monday of the Gregorian calendar and a common year starting on Sunday of the Julian calendar, the 1917th year of the Common Era (CE) and Anno Domini (AD) designations, the 917th year of the 2nd millennium, the 17th year of the 20th century, and the 8th year of the 1910s decade. As of the start of 1917, the Gregorian calendar was 13 days ahead of the Julian calendar, which remained in localized use until 1923.
Events
(Below, the events of World War I have the "WWI" prefix)
January
Main article: January 1917
January 2 β The Royal Bank of Canada takes over Quebec Bank.
January 3 β Ratho rail crash in Scotland: An Edinburgh to Glasgow express train collides with a light engine leaving 12 people dead and 46 seriously injured; the cause is found to be inadequate signalling procedures.[1]
January 9 β WWI β Battle of Rafa: The last substantial Ottoman Army garrison on the Sinai Peninsula is captured by the Egyptian Expeditionary Force's Desert Column.
January 11 β Unknown saboteurs set off the Kingsland Explosion at Kingsland (modern-day Lyndhurst, New Jersey), one of the events leading to United States involvement in WWI.
January 16 β The Danish West Indies is sold to the United States for $25 million.
January 19 β Silvertown explosion: A blast at a munitions factory in London kills 73 and injures over 400; the resulting fire causes over Β£2,000,000 worth of damage.
January 22 β WWI: United States President Woodrow Wilson calls for "peace without victory" in Germany.
January 25
WWI: British armed merchantman SS Laurentic is sunk by mines off Lough Swilly (Ireland), with the loss of 354 of the 475 aboard.
An anti-prostitution drive in San Francisco occurs, and police close about 200 prostitution houses.
January 26 β The sea defences at the English village of Hallsands are breached, leading to all but one of the houses becoming uninhabitable.
January 28 β The United States ends its search for Pancho Villa.
January 30 β Pershing's troops in Mexico begin withdrawing back to the United States. They reach Columbus, New Mexico February 5.
February==
==Main article: February 1917
February 1 β WWI: Atlantic U-boat Campaign: Germany announces its U-boats will resume unrestricted submarine warfare, rescinding the 'Sussex Pledge'.
February 3 β WWI: The United States severs diplomatic relations with Germany.
February 5 β The new constitution of Mexico is adopted.
February 13
Mata Hari is arrested in Paris for spying.
WWI β Raid on Nekhl: Units of the Egyptian Expeditionary Force completely reoccupy the Egyptian Sinai Peninsula.
February 21 β 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.[2]
February 24 β WWI: United States ambassador to the United Kingdom, Walter Hines Page, is shown the intercepted Zimmermann Telegram, in which Germany offers to give the American Southwest back to Mexico, if Mexico would take sides with Germany, in case the United States would declare war on Germany.
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