WHAT ALL HAPPENED MAY TO DECEMBER 1905
Find out what all happened May to December 1905

Irish nationalist Arthur Griffith founds Sinn Féin as a political party with the main aim of establishing a dual monarchy in Ireland. (28. November 1905)

Prince Carl of Denmark arrives in Norway to become King Haakon VII of Norway. (25. November 1905)

Princess Margaret of Connaught marries Gustaf, Crown Prince of Sweden. (15. June 1905)

The Partition of Bengal in India takes place. (16. October 1905)

Russo-Japanese War: The Battle of Tsushima begins. (27. May 1905)

Norway holds a referendum in favor of monarchy over republic. (12. November 1905)

The October Manifesto issued by Tsar Nicholas II of Russia (17. October 1905)

Albert Einstein's paper, "Does the Inertia of a Body Depend Upon Its Energy Content?", is published in the journal Annalen der Physik. This paper reveals the relationship between energy and mass. This leads to the mass–energy equivalence formula E = mc². (21. November 1905)

Russo-Japanese War: peace negotiations begin in Portsmouth, New Hampshire. (10. August 1905)

Russo-Japanese War: In New Hampshire, United States, the Treaty of Portsmouth, mediated by U.S. President Theodore Roosevelt, ends the war. (5. September 1905)

Norway becomes independent from Sweden. (26. October 1905)

A workers' uprising occurs in Kiev, Ukraine (then part of the Russian Empire), and establishes the Shuliavka Republic. (11. December 1905)

Wilbur Wright pilots Wright Flyer III in a flight of 24 miles in 39 minutes, a world record that stood until 1908. (5. October 1905)

The verdict in the six-month long Smarthavicharam trial of Kuriyedath Thathri is pronounced, leading to the excommunication of 65 men of various castes. (13. July 1905)

Prince Carl of Denmark becomes King Haakon VII of Norway. (18. November 1905)

The physics journal Annalen der Physik received Albert Einstein's paper "Does the Inertia of a Body Depend Upon Its Energy Content?", introducing the equation E=mc². (27. September 1905)

Las Vegas, Nevada, is founded when 110 acres (0.45 km2), in what later would become downtown, are auctioned off. (15. May 1905)

Russo-Japanese War: The Battle of Tsushima ends with the destruction of the Russian Baltic Fleet by Admiral Tōgō Heihachirō and the Imperial Japanese Navy. (28. May 1905)

Former Idaho Governor Frank Steunenberg is assassinated at the front gate of his home in Caldwell. (30. December 1905)

The trial in the Stratton Brothers case begins in London, England; it marks the first time that fingerprint evidence is used to gain a conviction for murder. (5. May 1905)