WHAT ALL HAPPENED MARCH TO AUGUST 1915
Find out what all happened March to August 1915

Japanese 21 Demands Ultimatum to China (Commemorated as National Day of Humiliation) (7. May 1915)

The use of poison gas in World War I escalates when chlorine gas is released as a chemical weapon in the Second Battle of Ypres. (22. April 1915)

Foundation of the British Women's Institute. (16. June 1915)

US Navy salvage divers raise F-4, the first U.S. submarine sunk in an accident. (29. August 1915)

World War I: The German 12th Army occupies Warsaw during the Gorlice–Tarnów Offensive and the Great Retreat of 1915. (4. August 1915)

Lassen Peak erupts with a powerful force, and is the only mountain other than Mount St. Helens to erupt in the contiguous US during the 20th century. (22. May 1915)

Militia officer Henry Pedris executed by firing squad at Colombo, Ceylon - an act widely regarded as a miscarriage of justice by the British colonial authorities. (7. July 1915)

World War I: Massive naval attack in Battle of Gallipoli. Three battleships were sunk during a failed British and French naval attack on the Dardanelles. (18. March 1915)

William Jennings Bryan resigns as Woodrow Wilson's Secretary of State over a disagreement regarding the United States' handling of the sinking of the RMS Lusitania. (9. June 1915)

A story in New York World reveals that the Weimar German government had purchased excess phenol from Thomas Edison that could be used to make explosives for the war effort and diverted it to Bayer for aspirin production. (15. August 1915)

French pilot Roland Garros is shot down and glides to a landing on the German side of the lines during World War I. (18. April 1915)

An International Railway trolley with an extreme overload of 157 passengers crashes near Queenston, Ontario, killing 15. (7. July 1915)

The arrest of 250 Armenian intellectuals and community leaders in Istanbul marks the beginning of the Armenian Genocide. (24. April 1915)

First Order of the Arrow ceremony takes place and the Order of the Arrow is founded. (16. July 1915)

The passenger ship S.S. Eastland capsizes while tied to a dock in the Chicago River. A total of 844 passengers and crew are killed in the largest loss of life disaster from a single shipwreck on the Great Lakes. (24. July 1915)

Typhoid Mary, the first healthy carrier of disease ever identified in the United States, is put in quarantine, where she would remain for the rest of her life. (27. March 1915)

NACA, the predecessor of NASA, is founded. (3. March 1915)

World War I: Italy joins the Allies after they declare war on Austria-Hungary. (23. May 1915)

World War I: German submarine U-20 sinks RMS Lusitania, killing 1,198 people including 128 Americans. Public reaction to the sinking turns many formerly pro-Germans in the United States against the German Empire (7. May 1915)

Jewish American Leo Frank is lynched for the alleged murder of a 13-year-old girl in Marietta, Georgia, United States. (17. August 1915)