शास्त्रीय संस्कृत साहित्यिक कृति 'रत्नावली' के लेखक कौन थे?

Who is the author of the Jain text 'Trishashtilaksana Mahapurana'?

Which work is regarded as the first historical chronicle in Sanskrit literature written with historical methodology?

Which perspective or tradition of history is primarily observed in the historical sections (Vamsha and Vamshanucharita) of the Puranas?