Where did the oldest book in the world appear in 2600 BC?

In 2600 BC, the world's oldest book, Epic of Ithana, appeared. In 2600 BC, this epic of Ithana was one of the oldest books in the world, with a history of more than 5,000 years. This ancient book was unearthed in the ruins of Sumerian civilization. Although it is in the form of clay tablet literature, it is indeed the most complete clay tablet literature in the world.