Answer:
C. It brought young people, who had been disillusioned by the government's handling of the war, into the political process.
Explanation:
The 26th amendment to the Constitution granted all persons of the age 18 or older the right to vote. Prior to this amendment, the legal voting age was 21.
Since this amendment allowed for younger people to vote, it gave them a voice in politics and adjoined them to the political process.
Instead of copying the ancient Greeks law system completely they applied some of their ideas to their existing legal system which made it more stable.