sold them as independent agents. Not allowed to return unsold papers, the newsboys typically earned around 30 cents a day and often worked until very late at night. Cries of "Extra, extra!" were often heard into the morning hours as newsboys attempted to hawk every last paper. In 1898, with the Spanish–American War increasing newspaper sales, several publishers raised the cost of a newsboy bundle of 100 newspapers from 50¢ to 60¢, a price increase that at the time was offset by the increased sales. After the war, many papers reduced the cost back to previous levels, with the notable exceptions of the New York World and the New York Morning Journal. In July 1899, a large number of New York City newsboys refused to distribute the papers of Joseph Pulitzer, publisher of the World, and William Randolph Hearst, publisher of the Journal. The strikers demonstrated across the Brooklyn Bridge for several days, effectively bringing traffic to a standstill, along with the news distribution for most New England cities. Several rallies drew more than 5,000 newsboys, complete with charismatic speeches by strike leader Kid Blink. Blink and his strikers were the subject of violence, as well. Hearst and Pulitzer hired men to break up rallies and protect the newspaper deliveries still underway. Other significant international events May 1-October 30, 1893 - The 1893 World's Fair, also known as the World's Columbian Exposition, was held in Chicago, Illinois to celebrate the 400th anniversary of Christopher Columbus's discovery of the New World. The Exposition was an influential social and cultural event and had a profound effect on architecture, sanitation, the arts, Chicago's self-image, and American industrial optimism. Science and technology Technology 1890s: Bike boom sweeps Europe and America with hundreds of bicycle manufacturers in the biggest bicycle craze to date. 1890: Clément Ader of Muret, France creates his Ader Éole. "Ader claimed that while he was aboard the Ader Eole he made a steam-engine powered low-level flight of approximately 160 feet on October 9, 1890, in the suburbs of Paris, from a level field on the estate of a friend." It was a powered and heavier-than-air flight, but is often discounted as a candidate for the first flying machine for two main reasons. "It was not capable of a prolonged flight (due to the use of a steam engine) and it lacked adequate provisions for full flight control.". His Ader Avion II