What you basically need to know is that the contras were right-wing and that they opposed the left-wing government.
The left-wing governments were generally not seen as desired during the cold war because they could strengthen the communists, which were competing with the US.
So the US hoped that the contras would weaken or even replace the left-wing government.
Answer:
To unite such a vast empire, Persian rulers relied on sophisticated infrastructure, centralized government, and a well-developed bureaucracy.
Explanation:
Lead expeditions to make the area. Made transportation a lot easier by expanding railroads out west. Created roads for easier travel. Established courts and government buildings. Sent the armed forces to make sure everything was safe. The question is vague so I kind of have to give you a vague answer.
