Of the following, the best reason the united states might aid another country is to
1. protect a trading relationship.
2. improve their global reputation.
3. the other country gain power.
4. develop another allied relationship.

protect a trading relationship

Explanation:

i took the test. also it is obvious

the correct answer that would best complete the given statement above would be option b. expanding civil services. diocletian and constantine paved the way for foreign invasion by dividing the empire, creating administrative bureaucracies and reorganizing the military, except for expanding civil services. hope this answer .

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explanation: