Category:United States by topic by year
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Not to be confused with the category: United States by year by topic. English: United States by topic by year |
| "United States by topic" is the subject, "by year" is the sort criterion for this category. Format of categories within this category: [year] in the United States by topic Example: 2012 in the United States by topic |
 | This meta category should only contain other categories. Files should either be in the relevant subcategory or in the parent category. |