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  2. Petrocurrency - Wikipedia

    en.wikipedia.org/wiki/Petrocurrency

    Petrocurrency. Petrocurrency (or petrodollar) is a word used with three distinct meanings, often confused: Dollars paid to oil-producing nations (petrodollar recycling)—a term invented in the 1970s meaning trading surpluses of oil-producing nations. [1]

  3. Petrodollar recycling - Wikipedia

    en.wikipedia.org/wiki/Petrodollar_recycling

    Petrodollar recycling. Fluctuations of OPEC net oil export revenues since 1972, showing elevated inflation-adjusted levels during 1974–1981 and 2005–2014 [1][2] Petrodollar recycling is the international spending or investment of a country's revenues from petroleum exports (" petrodollars "). [3] It generally refers to the phenomenon of ...

  4. Commodity money - Wikipedia

    en.wikipedia.org/wiki/Commodity_money

    This is the earliest form of Japanese currency. Commodity money is money whose value comes from a commodity of which it is made. Commodity money consists of objects having value or use in themselves (intrinsic value) as well as their value in buying goods. [1] This is in contrast to representative money, which has no intrinsic value but ...

  5. History of the United States dollar - Wikipedia

    en.wikipedia.org/wiki/History_of_the_United...

    t. e. The history of the United States dollar began with moves by the Founding Fathers of the United States of America to establish a national currency based on the Spanish silver dollar, which had been in use in the North American colonies of the Kingdom of Great Britain for over 100 years prior to the United States Declaration of Independence.

  6. Shell money - Wikipedia

    en.wikipedia.org/wiki/Shell_money

    Shell money is a medium of exchange similar to coin money and other forms of commodity money, and was once commonly used in many parts of the world. [1] Shell money usually consisted of whole or partial sea shells, often worked into beads or otherwise shaped. The use of shells in trade began as direct commodity exchange, the shells having use ...

  7. Medium of exchange - Wikipedia

    en.wikipedia.org/wiki/Medium_of_exchange

    e. In economics, a medium of exchange is any item that is widely acceptable in exchange for goods and services. [1] In modern economies, the most commonly used medium of exchange is currency. Most forms of money are categorised as mediums of exchange, including commodity money, representative money, cryptocurrency, and most commonly fiat money.

  8. Economic history of Venice - Wikipedia

    en.wikipedia.org/wiki/Economic_history_of_Venice

    Economic history of Venice. Venice, which is situated at the north end of the Adriatic Sea, was for hundreds of years the richest and most powerful centre of Europe, the reason being that it gained large-scale profits from the adjacent middle European markets. Venice was the major centre of trade with the Arabs and indirectly the Indians during ...

  9. Lead-based paint in the United States - Wikipedia

    en.wikipedia.org/wiki/Lead-based_paint_in_the...

    The District of Columbia defines "lead-based paint" as any "paint, surface coating that contains lead equal to or exceeding 0.7 milligram per square centimeter (0.7 mg/cm2) or 0.5% by weight." [9] This is more stringent than the HUD lead-based paint standard of 1.0 mg/cm2) . Some states have adopted this or similar definitions of "lead-based ...