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Archaeologists have found the world's
piece of string. They are very happy about
. One reason is the string is around 50,000 years
. The second reason is the string shows that an
species of humans called Neanderthals were more intelligent
we thought. Neanderthals became
about 35,000 years ago but the string shows they had a
understanding of plants and
. The Neanderthals may have used the string to make clothes, bags, rope, mats and
things. They were probably as intelligent as modern
.