The site navigation utilizes arrow, enter, escape, and space bar key commands. Left and right arrows move across top level links and expand / close menus in sub levels. Up and Down arrows will open main level menus and toggle through sub tier links. Enter and space open menus and escape closes them as well. Tab will move on to the next part of the site rather than go through menu items.
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Rogers M. Smith is a professor of political science at Yale University.
The customary division of national laws of citizenship into the "principles" of jus soli (place of birth) or jus sanguinis (line of descent) denotes the objective criteria most often used to determine one's citizenship.
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