Spanish dominance, General Emilio Aguinaldo declares the Philippines' independence from Spain. June 13 – Yukon Territory is formed in Canada, with Dawson chosen as its capital. June 19 – A snack food processing giant Nabisco founded in New Jersey, United States. June 21 – Spanish–American War: The United States captures Guam, making it the first U.S. overseas territory. June 28 – Effective date of the Curtis Act of 1898 which will lead to the dissolution of tribal and communal lands in Indian Territory and ultimately the creation of the State of Oklahoma in 1907. July–September July 1 – Spanish–American War: Battle of San Juan Hill – United States troops (including Buffalo Soldiers and Theodore Roosevelt's Rough Riders) take a strategic position close to Santiago de Cuba from the Spanish. July 3 Spanish–American War: Battle of Santiago de Cuba – The United States Navy destroys the Spanish Navy's Caribbean Squadron. American adventurer Joshua Slocum completes a 3-year solo circumnavigation of the world. July 4 – En route from New York to Le Havre, the ocean liner collides with another ship and sinks off the coast of Sable Island with the loss of 549 lives. July 7 – The United States annexes the Hawaiian Islands. July 9 – The Nationale Tentoonstelling van Vrouwenarbeid 1898 took place in The Hague and becomes a milestone for the Dutch women's movement. July 17 – Spanish–American War: Battle of Santiago Bay – Troops under United States General William R. Shafter take the city of Santiago de Cuba from the Spanish. July 18 – "The Adventures of Louis de Rougemont" first appear in The Wide World Magazine, as its August 1898 issue goes on sale. July 25 – Spanish–American War: The United States invasion of Puerto Rico begins, with a landing at Guánica Bay. August 12 – Spanish–American War: Hostilities end between American and Spanish forces in Cuba. August 13 – Spanish–American War: Battle of Manila – By prior agreement, the Spanish commander surrenders the city of Manila to the United States, in order to keep it out of the hands of Filipino rebels, ending hostilities in the Philippines. August 20 – The Gornergrat railway opens, connecting Zermatt to the Gornergrat in Switzerland. August 21 – Clube de Regatas Vasco da Gama is founded in Rio de Janeiro, Brazil. August 23 – The Southern Cross Expedition, the first British venture of the Heroic Age of Antarctic Exploration,