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.
1 Northern Mariana Islands: 18; universal; indigenous inhabitants are US citizens but do not vote in US presidential elections. 2  Norway: 18; however, persons 17 years of age are permitted to vote in parliamentary elections if they will be 18 years of age in the year the election is held.