How did us participation in the Vietnam lead to the 26 th amendment?

U.S. participation in the Vietnam War prompted widespread protests and debates about the fairness of drafting young men to fight while they could not vote. Many argued that if 18-year-olds were old enough to be conscripted into military service, they should also have the right to vote. This growing sentiment led to the passage of the 26th Amendment in 1971, which lowered the voting age from 21 to 18, ensuring that those affected by military decisions had a say in the democratic process.