Answer:
I would do:
1) More money than your enemies have Technological superiority - particularly in military weapons.
2) The most up to date communications methods within your army.
3) An organized spy system to provide detailed information about your enemies.
4) Fast and safe supply lines from your armies back to your homeland.
5) A better trained. more obedient army than that of your enemies.
6) A larger army than that of people you are planning to attack.
7)
8)
9) An inspired and forceful military leader Religious support for your attacks.
Explanation:
That's just what I would do.