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AIzaSyCYaC8UkdPkQKLFUmpasLV5eC3M802CrcA
92085
8447
2

feb 2, 900 BC - The Abacus was invented

Added to timeline:

2 Oct 2017
0
0
81
Calcuclator timeline

Date:

feb 2, 900 BC
Now
~ 2920 years ago
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