Who saved the life of Gandhiji in Bihar during Champaran Satyagraha?

Who was behind the first known attempt on Gandhi’s life in India during the Champaran Satyagraha in 1917?

Who led the Champaran Satyagraha in 1917 ?

Who accompanied Mahatma Gandhi during the Champaran Indigo Movement?

At which place of Bihar, Gandhiji started Satyagraha movement for the first time in India :

Who drew Gandhiji's attention to the plight of indigo peasants in Champaran?