To understand culture (Theme 1), for example, students also need to understand the theme of time, continuity, and change (Theme 2); the relationships between people, places, and environments (Theme 3); and the role of civic ideals and practices (Theme 10). To understand power, authority, and governance (Theme 6), students need to understand different cultures (Theme 1); the relationships between people, places, and environments (Theme 3); and the interconnections among individuals, groups, and institutions (Theme 5). History is not confined to TIME, CONTINUITY, AND CHANGE (Theme 2) because historical knowledge contributes to the understanding of all the other themes; similarly, geographic skills and knowledge can be found in more than (Theme 3).