- The Kakori Conspiracy took place in 1925. - Key figures included Ram Prasad Bismil, Ashfaqulla Khan, Roshan Singh, and Rajendra Lahiri, who were subsequently hanged. - Bhagat Singh joined the Hindustan Republican Association (HRA) after the Kakori incident and was involved in later revolutionary activities. - Bhagat Singh was not associated with the Kakori case itself.