Premechanical era
The time between 3000B.C. and 1450A.C. Humans first started communicating by using picture drawings known as petroglyths. Phoenician alphabet was developed.
The Chinese made paper from rags.
Around 100A.C. was when people from India created the first 1-9 system. Until 875A.C. the number 0 was invented.
The abacus was created.
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