They used violence and intimidation to prevent federal officials from collecting tax
Christians believe that there is a heaven and hell as well as reincarnation and their purpose in life is to obey what God's bible says
The fact that Japan is a very small island nation has always made it hard for them to have enough domestic natural resources, which has historically meant that they have elected powerful leaders who have supported going to war with larger countries, such as China and Russia, in order to gain more territory.
I think it is the last one, because revolutions are connected with the need for better treatment and living conditions.
A primary source comes from a first-hand witness's point of view which makes the information from that source more valid than a secondary.
