They both did a lot of damage for example they affected the economy & a lot of people died.
7.. you answered the question in the question! :)
The word “imperialism” is widely used as an emotive—and more rarely
as a theoretical—term to denote specific forms of aggressive behavior on
the part of certain states against others; the concept refers primarily
to attempts to establish or retain formal sovereignty over subordinate
political societies, but it is also often equated with the exercise of any form of political control or influence by one political community over another.
hope this helps :)
