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  2. Decade - Wikipedia

    en.wikipedia.org/wiki/Decade

    The most widely used method for denominating decades is to group years based on their shared tens digit, from a year ending in a 0 to a year ending in a 9 – for example, the period from 1960 to 1969 is the 1960s, and the period from 1970 to 1979 is the 1970s.

  3. List of time periods - Wikipedia

    en.wikipedia.org/wiki/List_of_time_periods

    This is a list of such named time periods as defined in various fields of study. These can be divided broadly into prehistorical periods and historical periods (when ...

  4. Glossary of history - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_history

    Also eon. age Age of Discovery Also called the Age of Exploration. The time period between approximately the late 15th century and the 17th century during which seafarers from various European polities traveled to, explored, and charted regions across the globe which had previously been unknown or unfamiliar to Europeans and, more broadly, during which previously isolated human populations ...

  5. Past - Wikipedia

    en.wikipedia.org/wiki/Past

    The past continuous tense refers to actions that continued for a period of time, as in the sentence "she was walking," which describes an action that was still happening in a prior window of time to which a speaker is presently referring. The past perfect tense is used to describe actions that were already completed by a specific point in the past.

  6. Era - Wikipedia

    en.wikipedia.org/wiki/Era

    An era is a span of time defined for the purposes of chronology or historiography, as in the regnal eras in the history of a given monarchy, a calendar era used for a given calendar, or the geological eras defined for the history of Earth. [1] Comparable terms are Epoch, age, period, saeculum, aeon (Greek aion) [2] and Sanskrit yuga. [3]

  7. History - Wikipedia

    en.wikipedia.org/wiki/History

    History is a wide field of inquiry encompassing many branches. Some branches focus on a specific time period. Others concentrate on a particular geographic region or a distinct theme. Specializations of different types can usually be combined. For example, a work on economic history in ancient Egypt merges temporal, regional, and thematic ...

  8. Periodization - Wikipedia

    en.wikipedia.org/wiki/Periodization

    The Baroque period was first designated as such in the 19th century, and is generally considered to have begun around 1600 in all media. Music history places the end of the period in the year 1750 with the death of J. S. Bach, while art historians consider the main period to have ended significantly earlier in most areas.

  9. Three-age system - Wikipedia

    en.wikipedia.org/wiki/Three-age_system

    Jōmon pottery, Japanese Stone Age Trundholm sun chariot, Nordic Bronze Age Iron Age house keys Cave of Letters, Nahal Hever Canyon, Israel Museum, Jerusalem. The three-age system is the periodization of human prehistory (with some overlap into the historical periods in a few regions) into three time-periods: the Stone Age, the Bronze Age, and the Iron Age, [1] [2] although the concept may ...