Pages in this category should be moved to subcategories where applicable. This category may require frequent maintenance to avoid becoming too large. It should directly contain very few, if any, pages and should mainly contain subcategories.

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This category collects subcategories of organizations, social structures of Category:People with a common purpose, ideology, belief, or interest. Major organizational subtrees include business (companies); religions; government and military; educational and scientific; non-profit/charitable; and social/professional. For the concept of organization, see Category:Organization.