परंपरागत रूप से जैन धर्म के प्रथम तीर्थंकर और संस्थापक के रूप में किसे माना जाता है?

In which year AD was the Jain Council held at Vallabhi under the leadership of Devardhi Kshamasramana to codify Jain canons?

Where did the final council take place for the collection and compilation of the Svetambara Jain Agamas/Prakrit texts?