What were some of the key cultural achievements of the empires and kingdoms in this era?

Key cultural achievements of the empires and kingdoms during the 6th to 10th centuries included the development of classical literature, such as Kalidasa's plays and poetry, and advancements in fine arts, including sculpture and temple architecture, particularly in the Chola and Gupta styles. There were also notable contributions to science and mathematics, such as Aryabhata's work in astronomy and mathematics, which laid the foundation for future discoveries in these fields.