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  2. Chemical Abstracts Service - Wikipedia

    en.wikipedia.org/wiki/Chemical_Abstracts_Service

    Chemical Abstracts Service (CAS) is a division of the American Chemical Society. It is a source of chemical information and is located in Columbus, Ohio , United States . Print periodicals

  3. List of regions of the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_regions_of_the...

    U.S. Census Bureau regions and divisions. Since 1950, the United States Census Bureau defines four statistical regions, with nine divisions. [1] [2] The Census Bureau region definition is "widely used ... for data collection and analysis", [3] and is the most commonly used classification system.

  4. List of states and territories of the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_states_and...

    The United States of America is a federal republic [1] consisting of 50 states, a federal district (Washington, D.C., the capital city of the United States), five major territories, and various minor islands. [2] [3] Both the states and the United States as a whole are each sovereign jurisdictions. [4]

  5. List of U.S. state and territory abbreviations - Wikipedia

    en.wikipedia.org/wiki/List_of_U.S._state_and...

    ISO 3166-2:US is the entry for the United States in ISO 3166-2, part of the ISO 3166 standard published by the International Organization for Standardization (ISO), which defines codes for the names of the principal subdivisions (e.g., provinces or states) of all countries coded in ISO 3166-1.

  6. Commonwealth (U.S. state) - Wikipedia

    en.wikipedia.org/wiki/Commonwealth_(U.S._state)

    Like Virginia, the official title of the elected local prosecutor in each of Kentucky's political subdivisions is the Commonwealth's Attorney, as opposed to State's Attorney in other states or the more standard District Attorney. Kentucky is the only state outside of the original Thirteen Colonies that uses commonwealth in its name.

  7. List of U.S. states and territories by GDP - Wikipedia

    en.wikipedia.org/wiki/List_of_U.S._states_and...

    This is a list of U.S. states and territories by gross domestic product (GDP). This article presents the 50 U.S. states and the District of Columbia and their nominal GDP at current prices. The data source for the list is the Bureau of Economic Analysis (BEA) in 2024. The BEA defined GDP by state as "the sum of value added from all industries ...

  8. List of capitals in the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_capitals_in_the...

    States (highlighted in purple) whose capital city is also their most populous States (highlighted in blue) that have changed their capital city at least once. This is a list of capital cities of the United States, including places that serve or have served as federal, state, insular area, territorial, colonial and Native American capitals.

  9. Geography of the United States - Wikipedia

    en.wikipedia.org/wiki/Geography_of_the_United_States

    Forty-eight of the states are in the single region between Canada and Mexico. This group is referred to, with varying precision and formality, as the contiguous United States, and as the "Lower 48". Alaska, which is included in the term "continental United States", is located at the northwestern end of North America.