The answer is 6800 BCE.
Jericho, one of the world's oldest villages, began an impressive building program of structures to protect their grain surplus around 6800 BCE.
<h3>What is Jericho and why is it important?</h3>
A Palestinian city in the West Bank is called Jericho. It is situated in the Jordan Valley, with Jerusalem to the west and the Jordan River to the east. It is also the oldest continuously inhabited city on the Earth.
The city's archaeological site is very significant because it shows how early permanent communities developed and how early civilization began. Traces of Mesolithic hunters' visits, carbon-dated to around 9000 BCE, as well as a protracted period of habitation by their descendants have been discovered.
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