Silk is a natural protein fiber. Silk fabric was first developed in Ancient China, and they developed the ability to use silk. Some of the earliest examples were found in 3500 BC.
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They developed the ability to use the moon to guide themselves
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Japan has developed technology for producing a synthetic spider silk with the same qualities as natural spider silk. Not all synthetic silk has the same qualities as the natural silk though.
silk was not invented, it is a natural fibre from the cocoon of a Silk Worm. Your question should ask when silk was developed. Earliest examples found in China are from the period 3500BC
China developed silk from silkworms, and this process is still used today.
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they were able to because they had developed bigger brains
A silkworm is the larva of the silk moth, Bombyx mori. It is a domesticated insect known for its ability to produce silk.
Only silk worms make silk so even though we can go to the moon and back, we need the silk worm to make silk as they are part of our environment.