Answer:
Option: d) the transcontinental telegraph was completed.
Explanation:
The Pony Express started in America as a to mail delivery service that covered the areas of between Missouri and California. The mails were delivered by the riders who would ride hundreds of miles with switching to fresh horses in each station on his way. The Pony Express went out of business after the opening of the transcontinental telegraph because telegraph could be sent faster with less cost.
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Jack London worked in stories about the wild. His running subject included the crude glory and force of the components. Naturalism was London's mantra and this story is a flawless case of this. In "To Build a Fire" the setting is in the Yukon. Dissimilar to the man, the puppy has naturalism incorporated with his DNA. The pooch and nature are in a state of harmony. The canine has been adapted by eras of advancement and he instinctually comprehends what to do and when to do it. The puppy likewise has the hereditary qualities to survive superior to man.
By the 16th Century, most Europeans had a Geocentric worldview. The geocentric theory is an ancient theory that places the Earth at the center of the universe, and the stars, including the Sun, revolving around the Earth (geo: Earth, centrism: grouped or center).
Adherence to the geocentric model was largely due to several important observations. First of all, if the Earth was able to move, then one should be able to observe the displacement of the fixed stars due to the stellar parallax. In short, if the Earth moved, the shapes of the constellations would change considerably over the course of a year. Because the stars were really much further away from what the Greek astronomers postulated (making the movement extremely subtle), the stellar parallax was not detected until the 19th century.
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