What is one important energy resource that the united states produces?

a. lumber
b. potassium
c. petroleum
d. agricultural products

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:

in 1989, tiananmen square in beijing was the site of china’s main industries. china’s government headquarters. -pro-democracy demonstrations. (second choice)

the colonial period, since this was a time of mass immigration from a variety of people from europe.