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they could only communicate with each other if they were face to face with the person they needed to talk to
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they created a piece of material that allowed them to carve on the walls and trees and in the ground to leave letter or notes to others while they traveled throughout the world
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A type of material that was light enough to be carried around easily by a person but was also able to be written on was created along with the pencil created in the earlier century so that some people could be warned of danger or just informed of things that were manditory
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they tied a thread of some sort to a metal object that would create a echo of sound into the object so that people within a certain length of space
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They have now created something that sends radio waves throughout the atmosphere and allows people to talk over 1000's of miles away through a device
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From the 1900's to about 1935 there was a time-span that they spent on creating technology and something called the internet that is used in everyday life as we know it today
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After the fact of having a telephone with the cup phone look but just "wireless" if you might say, the people decided they wanted something different so they dug deeper and created a hand held item that had a screen to see what was happening or who was calling
