A、He learned to use gun at the age of 21. B、He wrote a lot of books about his brief life. C、He was considered as a murderer rath

The 19th century Wild West criminal Billy the Kid has been denied a pardon 130 years after his death. The possibility was first suggested when historical documents appeared to show that Billy the Kid had been promised a pardon in return for testifying in a murder case.
    Billy the Kid, whose real name was William Bonney, was only 21 when he was shot dead, but his brief life inspired dozens of books and films. [3]It’s not clear how many people he killed; some say more than 20. But his undoubted skill with a gun and his personal charm made him more of a folk hero than an infamous criminal. Supporters campaigned for a pardon, but the Governor of New Mexico Bill Richardson has refused one after extensive research. [4]"The romanticism appealed to me," he said, "but the evidence didn’t support the idea."
3. What can we learn about Billy the Kid?
4. Why was the campaign for a pardon refused?