History
The first 911 system was installed in Haleyville, Alabama, in February 1968 as a way to quickly connect a subscriber to the local police station. This system did not identify the caller but did provide a means to access emergency services that had not previously been available.
The Wireless Communications and Public Safety Act of 1999 standardized and mandated that 9,1,1 would be the digits to be dialed within the United States for "reporting an emergency to appropriate authorities and requesting assistance".
This system was quickly adapted and improved by other telephone companies to become the E911 system which provides both caller location and identification. A pioneering system was in place in Chicago by the mid-1970s, providing both police and fire departments access to the source location of emergency calls. Enhanced 911 is currently deployed in most metropolitan areas in the United States and Canada.
Read more about this topic: Enhanced 9-1-1
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—Anton Pavlovich Chekhov (1860–1904)
“We know only a single science, the science of history. One can look at history from two sides and divide it into the history of nature and the history of men. However, the two sides are not to be divided off; as long as men exist the history of nature and the history of men are mutually conditioned.”
—Karl Marx (1818–1883)
“Let it suffice that in the light of these two facts, namely, that the mind is One, and that nature is its correlative, history is to be read and written.”
—Ralph Waldo Emerson (1803–1882)