Answer:
C republic
Explanation:
It all began when the Romans overthrew their Etruscan conquerors in 509 B.C.E. ... Once free, the Romans established a republic, a government in which citizens elected representatives to rule on their behalf.
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One reason is it helped promote exploration.
Another is communication was faster.
And people learned more about exploration.
Henry Kissinger and Le Duc Tho conducted the secret talks outside of the formal Paris peace talks.