Answer: Conflict, Greed, and Desperation.
Step-by-step explanation:
Conflict: Conflict and Insecurity might lead powerful people who are now threatened to try to take over somewhere else.
Greed: A powerful person might want to rule a place (or even worse, the world) if they are greedy enough and want MORE power.
Desperation: Someone who is desperate for power and/or money might feel as if they might try to rule a place, even by violent means.
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