Explanation:
Congress did that because when you're 18yrs of age , you are almost an adult.
1. It has helped in the election of presidential and parliamentary candidates
2. It has helped to improve marriages .
sorry if I'm wrong
Answer:
Congress passed the law so 18 yr olds could enlist in the armed forces.
Explanation:
In order for people to enlist they have to have the right to vote. Congress did this so they could have more people enlist in the Veitnam war.