These differences may reflect ideological differences in their sources; Pires named a "Javanese chronicle" as his source for Parameswara's biography, and is therefore more likely to have transmitted biases among the Majapahit against their Sumatran predecessors in Srivijaya, whereas the "Malay Annals" seek to highlight historical connections between the Kingdom of Singapura and its successor states of the Melaka Sultanate and the Johor Sultanate, promoting the legitimacy of its contemporary publishers in Johore. It is therefore unclear as to whether Singapore's 14th-15th century archaeology thus reflects five generations' worth of trade and exchange begun by Sang Nila Utama, or the Majapahit world-order and its brief disruption by Parameswara.