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Western Union acquired its only major competitor in the American telegraphy sector Postal Telegraph, Inc. in 1945, effectively giving the company monopoly power over the telegram industry. After 1945 the telegraphy industry began to experience a decline, with total telegraph messages almost halving from 1945 to 1960.
The timeline of North American telegraphy is a chronology of notable events in the history of the electric telegraphy in the United States and Canada, including the rapid spread of telegraphic communications starting from 1844 and completion of the first transcontinental telegraph line in 1861.
The Middle Passage was the stage of the Atlantic slave trade in which millions of enslaved Africans [2] were forcibly transported to the Americas as part of the triangular slave trade. Ships departed Europe for African markets with manufactured goods (first side of the triangle), which were then traded for slaves with rulers of African states ...
Several telegraph companies were combined to form the Eastern Telegraph Company in 1872. Australia was first linked to the rest of the world in October 1872 by a submarine telegraph cable at Darwin. [49] From the 1850s until well into the 20th century, British submarine cable systems dominated the world system.
Contemporary map of the 1858 transatlantic cable route. Transatlantic telegraph cables were undersea cables running under the Atlantic Ocean for telegraph communications. . Telegraphy is an obsolete form of communication, and the cables have long since been decommissioned, but telephone and data are still carried on other transatlantic telecommunication
The internal slave trade in the United States, also known as the domestic slave trade, the Second Middle Passage [1] and the interregional slave trade, [2] was the mercantile trade of enslaved people within the United States. It was most significant after 1808, when the importation of slaves from Africa was prohibited by federal law.
Monument in downtown Salt Lake City, Utah, marking the approximate location where the first transcontinental telegraph line was completed.. The first transcontinental telegraph (completed October 24, 1861) was a line that connected the existing telegraph network in the eastern United States to a small network in California, by means of a link between Omaha, Nebraska and Carson City, Nevada ...
Morse learned that Cooke and Wheatstone were using poles for their lines in England and decided to follow their lead. [5] Installation of the lines and poles from Washington to Baltimore began on April 1, 1844, using chestnut poles 23 feet (7 m) high spaced 300 feet (90 m) apart, for a total of about 700 poles. [ 6 ]