So we know when certain things in history took place. Its hard somtimes to remember/memorize all the dates, but timelines do help.
Hope this helps :D
Balboa claimed the entire Pacific ocean and all lands adjoining it for Spain.
Slaves. think the civil war
The Roman Empire was governed by an autocracy (government by one person) centered on the position of the emperor. The Senate, the dominant political institution of the Roman Republic, which preceded the empire, was retained by the emperor but lacked real political power. The hallmark of the Roman Empire was its extensive system of imperial administration, which included a hierarchy of magistrates and provincial governors.
i hope this helps