got it from google Primary-source documents related to responding to enslavement -- includes laws and proclamations, court records, newspaper articles and ads, letters, narratives, journal writings, music and lyrics. Transcribed interviews with audio clips of personal slave narratives relating to the theme of freedom and emancipation.
Answer:
First, I will take help from administrative records related to the agriculture in tribal areas. Then, I will study the old records, notices and information related to the same. Finally, I will collect the information from the documents produced by different researchers in country as well as outside the country.
Because Tetzel was selling indulgences which gave the impression that people could buy it.
Hope thisss helped!! :D have a great day.