Although its political borders have fluctuated throughout history, the region has developed its own distinct culture, influenced by the Rajasthani, Marathi and Gujarati cultures. Several prominent people in the history of India have lived in Malwa, including the poet and dramatist Kalidasa, the author Bhartrihari, the mathematicians and astronomers Varahamihira and Brahmagupta, and the polymath king Bhoja. Ujjain had been the political, economic, and cultural capital of the region in ancient times, and Indore is now the largest city and commercial centre.