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en.wikipedia.org/wiki/Timeline_of_historic_inventions

The timeline of historic inventions is a chronological list of particularly important or significant ... 5.10 20th century. 5.10.1 1900s .... 5th–4th century BC: Traction trebuchet in Ancient China; appeared in the Mediterranean by the 6th century AD .

www.thoughtco.com/20th-century-timeline-1992486

Technology, science, and inventions have progressed at an accelerated rate during the hundred years of the 20th century, more so than any other century.

www.toptenz.net/top-10-inventions-of-the-20th-century.php

Sep 9, 2010 ... And so, without further ado and in no particular order, here are my nominees for the ten greatest inventions/discoveries of the twentieth century: ...

www.historylearningsite.co.uk/inventions-and-discoveries-of-the-twentieth-century/inventions-1900-to-1990

Trueman · Contact · Home » Inventions and Discoveries of the Twentieth Century » Inventions 1900 to 1990 ... Citation: C N Trueman "Inventions 1900 to 1990"

www.ideafinder.com/history/timeline/the1900s.htm

20th Century Innovation Timeline. 1900 00 | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 . YEAR, INVENTION, INVENTOR. 1900, Dirigible Hershey Bar Radio, Wireless ...

www.zoomschool.com/inventors/1900a.shtml

Drew's first tape invention was a masking tape made for painters in 1923 (this tape was designed to help painters paint a straight border between two colors).

content.time.com/time/photogallery/0,29307,2026224,00.html

From atomic bombs to cell phones, the technological developments of the 20th Century have been profound, both improving our lives and endangering us.

www.toplst.com/the-10-top-inventions-of-the-20th-and-21st-centuries

In order to understand the changes occurred in the first part of the 21st century, it is important also to highlight the top ten inventions of the 20th century (again it ...

www.greatachievements.org

Welcome! How many of the 20th century's greatest engineering achievements will you use today? A car? Computer? Telephone? Explore our list of the top 20 ...