Slaves in union border states nor would those slaves in areas already captured by the union such as what goes in the blanks?

might be agreeing to participate ethically with other european nations in the slave trade

or notifying other european nations when taking possession   of african territories

julius caesar turned the roman republic into the roman empire by coming in and taking the "dictator" role during the time of a civil war (elites vs lower classes) winning battles and reputation, then declaring him dictator for life

hope this : )