Three-phase AC railway electrification was used in Italy, Switzerland and the United States in the early twentieth century. Italy was the major user, for lines in the mountainous regions of northern Italy from 1901 until 1976. The first lines were the Burgdorf-Thun line in Switzerland (1899), and the lines of the Ferrovia Alta Valtellina from Colico to Chiavenna and Tirano in Italy, which were electrified in 1901 and 1902. Other lines where the three-phase system were used were the Simplon Tunnel in Switzerland from 1906 to 1930, and the Cascade Tunnel of the Great Northern Railway in the United States from 1909 to 1927.
How long did three-phase system operate in Cascade Tunnel?
1909 to 1927

Norfolk Island Hospital is the only medical centre on the island. Medicare and the Pharmaceutical Benefits Scheme do not cover Norfolk Island. All visitors to Norfolk Island, including Australians, are recommended to purchase travel insurance. Although the hospital can perform minor surgery, serious medical conditions are not permitted to be treated on the island and patients are flown back to mainland Australia. Air charter transport can cost in the order of A$30,000. For serious emergencies, medical evacuations are provided by the Royal Australian Air Force. The island has one ambulance staffed by St John Ambulance Australia volunteers.
What is the name of the only medical center on Norfolk Island?
Norfolk Island Hospital

The foundations of the British Empire were laid when England and Scotland were separate kingdoms. In 1496 King Henry VII of England, following the successes of Spain and Portugal in overseas exploration, commissioned John Cabot to lead a voyage to discover a route to Asia via the North Atlantic. Cabot sailed in 1497, five years after the European discovery of America, and although he successfully made landfall on the coast of Newfoundland (mistakenly believing, like Christopher Columbus, that he had reached Asia), there was no attempt to found a colony. Cabot led another voyage to the Americas the following year but nothing was heard of his ships again.
When was John Cabot's voyage commissioned?
1496