Why was the 26th Amendment ratified?

Back in the days, young men were drafted but couldn’t vote. This is why the 26th amendment was ratified

- "bill clinton ( the 42nd u.s. president, served in office from by low unemployment, declining crime rates and a budget surplus. during clinton's second term, the u.s. economy was healthy, unemployment was low and the nation experienced a major technology boom and the rise of the internet."