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  1. Mark | Euro, Exchange Rate & History | Britannica Money

    In 1948 the deutsche mark (DM; “German mark”) was introduced in West Germany, and over the next several decades it developed into one of the world’s leading currencies, challenging the …

  2. West Valley City, Utah - Students | Britannica Kids | Homework Help

    West Valley City’s Maverik Center (formerly E Center) is an arena that opened in 1997 as a home for the Utah Grizzlies of the ECHL (East Coast Hockey League).

  3. E | Definition, Value, Constant, Series, & Facts | Britannica

    Dec 9, 2025 · E, mathematical constant that is the base of the natural logarithm function f(x) = ln x and of its related inverse, the exponential function y = ex. To five decimal places, the value …

  4. Force | Definition & Formula | Britannica

    Dec 4, 2025 · Force, in mechanics, any action that tends to maintain or alter the motion of a body or to distort it. The concept of force is commonly explained in terms of Isaac Newton’s three …

  5. Nitrogen dioxide | Definition, Chemistry, Sources, Air Pollution ...

    Molecular weight/molar mass: 46.006 g/mol Density: 1.880 g/dm 3 Boiling point: 21.15 °C (70.07 °F) Melting point: −9.3 °C (15.3 °F)

  6. archaeology - Students | Britannica Kids | Homework Help

    Portrait of Franz Boas from Canadian Museum of History, IMG2009-0081-0001-Dm In the Americas in the early 20th century, the theories of German-born American anthropologist …

  7. Eucharist | Definition, Symbols, Meaning, Significance, & Facts ...

    Nov 7, 2025 · Eucharist, in Christianity, ritual commemoration of Jesus’ Last Supper with his disciples, at which (according to tradition) he gave them bread with the words, ‘This is my …

  8. Phonology | Phonetics, Speech Sounds, Articulation | Britannica

    Synchronic (descriptive) phonology investigates sounds at a single stage in the development of a language, to discover the sound patterns that can occur. For example, in English, nt and dm …

  9. Antifa | Definition, Etymology, History, Charlottesville, Criticisms ...

    Dec 11, 2025 · Antifa is a broad and decentralized political movement aimed at preventing the resurgence of fascism through extraordinary means, including violence.

  10. History, Features, Description, & Facts - Britannica Money

    Users may connect with each other via private message (known as a direct message [DM]), where they can share permanent photos or videos or vanishing photos or videos (similar to …