Edited sentence: , Quilon has evolved as political and trade centre of Kulsekhara dynasty of Venad Empire.23, so many merchant travellers, explorers, missionaries, apostles and army commanders visited Quilon, as Quilon was the most important trading port in India.After AD.By the ninth century AD.Pliny had mentioned about the port city of Quilon much accurately.Pliny, Saint Thomas, Mar Sabor and Mar Proth, Marco Polo, Ibn Battuta and Zheng He are a few of them