What causes the electric charges to flow from one end of the battery to the other?

a balance in electric potential
a balance in resistance
a difference in electric potential
a difference in resistance

Which action by the us war department angered chief red cloud to the point that he refused to sign the treaty of fort laramie ? a) the killing of buffalo by the united states troops b) the appointment of troops to the powder river basin c) the burning of parts of the powder river basin d) the murder of chief red cloud’s wife