– The Kingdom of Siam (now Thailand) cedes its province of Luang Prabang (now Laos) to France. May 3 – Francisco Silvela becomes the new Prime Minister of Spain after the resignation on March 7 of Práxedes Sagasta in the wake of Spain's loss of its overseas territories during the Spanish-American War. The Ferencvárosi TC Association football club is founded in Budapest. May 4 – The thoroughbred horse Manuel, ridden by Fred Taral, wins the 25th running of the Kentucky Derby. Inventor John Matthias Stroh applies for the patent for his new invention, the "Stroh violin", a stringed musical instrument with an amplifying horn attached. British Patent No. GB9418 is granted on March 24, 1900. May 5 – The village of Stirling, Alberta is founded in Canada as a Mormon colony of 30 American settlers from Richfield, Utah, led by Theodore Brandley May 6 – The first democratic elections in Philippine history are held in for a municipal government for Baliuag in the province of Bulacan. May 7 – The capital of the First Philippine Republic is moved by President Emilio Aguinaldo from Manolos to Angeles City May 8 – In the French West African colony of Niger, French Army Captain Paul Voulet carries out the massacre of the Hausa inhabitants of the village of Birni-N'Konni in retaliation for the continued resistance of Queen Sarraounia. May 9 – The first KNVB Cup of the Royal Dutch Football Association is won by RAP Amsterdam in extra time, 1 to 0, over HVV Den Haag. May 10 – Finnish farmworker Karl Emil Malmelin kills seven people with an axe at the Simola croft in the village of Klaukkala. May 11 – Alberto Santos-Dumont attempts the first test flight of his Airship No. 2, but rain cools the hydrogen during the ship's inflation and a gust of wind blows it into nearby trees, where it is destroyed. May 12 – The first trade union for railway employees in Sweden, the Svenska Järnvägsmannaförbundet (Sweden Railworkers' League) is founded. It lasts until 1970, when it merges into a labor union of Swedish government employees. May 13 – A train wreck near Reading, Pennsylvania kills 28 people and injures 50. The Esporte Clube Vitória Association football club is founded in Salvador, Brazil. May 14 – The three time world champion Club Nacional de Football is founded in Montevideo, Uruguay. May 15 – A clue to the