Atlantis never existed; it's a myth.
However, according to treasure-hunting lunatics, it sank under the North Atlantic Ocean at around 1600 B.C. due to some natural disaster. Some say that's not all; Atlantis had a (supposing) hidden secret. It was believed that moments before the disappearance a common girl of an unknown was believed to have found a sacred stone (green in color) believed now to be closely described as called the Jade Stone. Only this one was very different from the modern and updated Jade stone. It was almost its color only it was believed to have a color on it out of this world, no human eye has ever seen. Somehow when "she" touched it for the second time "For the second day the sun may open the clouds, the clouds again" the clouds opened and the city was destroyed by an object which was as smooth and shapely as the sunrise.
Atlantis is not real, it was part of a myth.
It is possible that Atlantis lied were the Bermuda triangle lies or was forming. Making it possible for Atlantis to sink into the ocean.
No, natural disasters did.
Atlantis is a lost city that is famous in mythology. It is not clear whether it sank or was flooded.
It was supposedly due to natural disasters.
The year 9600 BC.
the reason why Poseidon sunk the city of Atlantis is that the people were so sinful that made Poseidon very angry and sent a tsunami to sink it...
Atlantis is a semi-mythical place. There is no evidence that it really existed. If it did it was likely to be in the Mediterranean Sea.
According to Plato, 11,000 to 12,000 years ago.
According to Plato, one day and one night.
No. According to Plato, it sank 11,600 years ago.