Nail

The sophisticated human life would not have been possible without the invention of a small nail. They provide one of the best clues in determining the age of historic buildings. 
Prior to the invention of nails, wood structures were built by geometrically interlocking adjacent boards. The invention of nails goes back to several thousand years and was possible only after the development of casting and shaping a metal.
Around 3400 BC, Bronze nails were found in Egypt. According to the University of Vermont, the hand-wrought nails were a norm until the 1790s and early 1800s. By 1913, 90 percent of nails produced in the U.S. were steel wire nails.
Other types of nails include pins, tacks, brads, and spikes with wire nails being popular.

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