Check off the two main characteristics that are used to determine whether or not a society is considered an empire.
The center of an empire has more power than the periphery (or outer parts of an empire).
The leaders of an empire usually give people a choice as to whether or not they want to join the empire.
One of the most common ways for empires to grow larger is to conquer other people using military force.
Check off the two main goals of an empire.
Where could you find empires throughout history?
Running an empire is expensive.
Why do people living in the periphery (or outer parts) of an empire often rebel against the leaders?
Empires often expand to get access to natural resources that they wouldn't otherwise have access to.
The longer an empire's borders are, the easier it is to control the empire.
At what point do most empires usually collapse?