Spanish merchant ship. April 23 – Spanish–American War: A conference of senior Spanish Navy officers led by naval minister Segismundo Bermejo decide to send Admiral Pascual Cervera's squadron to Cuba and Puerto Rico. April 25 – Spanish–American War: The United States declares war on Spain; the U.S. Congress announces that a state of war has existed since April 21 (later backdating this one more day to April 20). April 25 – In Essen, German company Rheinisch-Westfälisches Elektrizitätswerk RWE is founded. April 26 – An explosion in Santa Cruz, California kills 13 workers, at the California Powder Works. April 29 – A first time of large scale for commercial vehicle exhibition show, Paris Auto Show was held in Tuileries Garden, Paris, France. May 1 – Spanish–American War – Battle of Manila Bay: Commodore Dewey destroys the Spanish squadron, in the first battle of the war, as well as the first battle in the Philippines Campaign. May 2 – Thousands of Chinese scholars and Beijing citizens seeking reforms protest in front of the capital control yuan. May 7–9 – Bava Beccaris massacre: Hundreds of demonstrators are killed, when General Fiorenzo Bava Beccaris orders troops to fire on a rally in Milan, Italy. May 8 – The first games of the Italian Football Federation are played, in which Genoa played against Torino. May 12 – Spanish–American War: The Puerto Rican Campaign begins, with the Bombardment of San Juan. May 27 – The territory of Kwang-Chou-Wan is leased by China to France, according to the Treaty of 12 April 1892, as the Territoire de Kouang-Tchéou-Wan, forming part of French Indochina. May 28 – Secondo Pia takes the first photographs of the Shroud of Turin and discovers that the image on the Shroud itself appears to be a photographic negative. June 1 – The Trans-Mississippi Exposition World's Fair opens, in Omaha, Nebraska. June 7 – William Ramsay and Morris Travers discover neon at their laboratory at University College London, after extracting it from liquid nitrogen. June 9 – The British government arranges a 99-year rent of Hong Kong from China. June 10 – Tuone Udaina, the last known speaker of the Dalmatian language, is killed in an explosion. June 11 – Peking Normal University Hall, as predecessor for Peking University was founded in Qing Dynasty. (present day of People's Republic of China) June 12 – Philippine Declaration of Independence: After more than 377 years of