Go here to view a slide show on the evolution of Paricutin prepared by Scott Rowland. Sources of Information: Foshag, W.F., and Gonzalez-Reyna, J., 1956, Birth and development of Paricutin volcano: U.S. Geological Survey Bulletin 965-D, p. 355-489.
In 1971, the Twenty-sixth Amendment set the legal voting age at 18 for both US federal and state elections.
A voting age is a minimum age established by law that a person must attain before they become eligible to vote in a public election. Today, the most common voting age is 18 years; however, voting ages as low as 16 and as high as 25 exist (see list below). Most countries have set a minimum voting age, often set in their constitution. In a number of countries voting is compulsory for those eligible to vote, while in most it is optional.