List the three reasons peter expects christians to rejoice (1 pet. 1: 3-6)

Well one reason is because the resurrection of Jesus Christ second reason because we have an inheritance that is Incorruptible and undefiled and that fadeth not away reserved in heaven and the third is because we are kept by the power of God through faith unto salvation ready to be revealed in the last time when Jesus come back

They made a checks and balance system to equal power within the branches. the "check" meant that one branch would watch one branch and "balance" them if they were too powerful. if you want more info on this, i would just google checks and balance system.