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Australia Virtual Inspire 2020

Share insights, discuss our learnings and participate in fun activities throughout Virtual Inspire 2020.

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Level 4 Contributor

here is my attempt


glassware - 3500BC
soap - 2800BC
magnetic compass - 206BC
Cannon -12th Century
barbed wire - 1874
light bulb - 1879
ballpoint pen - 1930s
compact disc - 1979