how many years are in an era?

Answer 1

There is no specific criteria for how many years it can include.

Era is a word used in English since 1615, derived from Late Latin aera "an era or epoch from which time is reckoned," probably identical to Latin æra "counters used for calculation," plural of æs "brass, money".

The Latin word's use in chronology seems to have begun in 5th century Visigothic Spain, where it appears in the History of Isidore of Seville, and in later texts. The Spanish era is calculated from 38 BC, perhaps because of a tax (cfr. indiction) levied in that year, or due to a miscalculation of the Battle of Actium, which occurred in 31 BC.

Like epoch, "era" in English it originally meant "the starting point of an age;" the meaning "system of chronological notation" is c.1646; that of "historical period" is 1741.

In chronology, an era is the highest level for the organization of the measurement of time. A calendar era span of many years which are numbered beginning at a specific epoch, which often marks the origin of a state or cosmology, the birth of a leader, or another significant historical or mythological event; it can be called after either accordingly.

The word era also denotes the units used under a different, more arbitrary system where time is not represented as an endless continuum with a single reference year, but each unit starts counting from one again, as if time starts again. Such rather impractical system — a nightmare for historians once a single piece of the puzzle is missing — is the use of regnal years, which often reflects the preponderance in public life of the absolute ruler in many ancient cultures, while such tradition sometimes outlives the political power of the throne.

In East Asia, each emperor's reign may be subdivided into several reign periods, each being treated as a new era. The name of each was a motto or slogan chosen by the emperor. Different East Asian countries utilized slightly different systems, notably:

Chinese Eras
Japanese Eras
Korean Eras
Vietnamese Eras
A similar practice survived in the United Kingdom until quite recently, but only for formal official writings: in daily life the ordinary year A.D. was used since long, but Acts of Parliament used to be dated according to the years of the reign of the current Monarch, so that "61 & 62 Vict c. 37" refers to the Local Government (Ireland) Act 1898 passed in the session of Parliament in the 61st/62nd year of the reign of Queen Victoria.

In common speech and various contexts, the term era is also used, by extension, for any (as a rule relatively long) period in history with a name, often relating to common characteristic(s), even if this is not the normal way to organize time. The most relevant type are politic periods, for example: the Roman era, the Elizabethan era, the Victorian era (dynastic criteria, only formally correct within the British realm/empire/Commonwealth) and the Soviet era, or comparable literary notions like the Biblical era.

The word Era is also popularly used to denote the passing of — often shorter — periods that are only defined in terms of a specific discipline of sphere of life, such as the prominence of an artistic style, or more specifically in music, see musical eras, described in History of music, such as the Big Band era, Disco era. An event such as the death of Frank Sinatra is poetically called the end of an era.

In natural science, there is need for another time perspective, independent from human activity, and indeed spanning a far longer period (mainly prehistoric), as in Geology where era refers to four well defined time spans covering the entire existence of the planet Earth: from oldest to youngest, these are the Proterozoic, Paleozoic, Mesozoic, and Cenozoic eras, each subdivided in shorter periods; see Geologic timescale for a slightly different interpretation and details.
In astronomy the periods are even longer, to cover the entire existence of the universe (in the order of 13.7 billion years), but usually just denoted in numerical units, as there is no significant link to any earthly reality, our planet being astronomically insignificant (except as the only known observation point).

Answer 2

It's not a specific number of years; it depends on the context. An era just means a period of time that is significant.

For instance, in pop culture an era might be a decade, because culture changes a lot in just ten years. But if you are talking about the history of blacks in the U.S., you might say that the time of slavery is one era; from the Civil War to the civil rights movement is another era, etc.

Answer 3

An era is not dependant on years but dependant on how society behaves or what society has accomplished. Take for example the era of Prohibition vs. the 80's.

Answer 4

1 - 1969 - Woodstock 2 - 1970 - Atlanta Pop Festival 3 - 1964 - The Beatles invade America 4 - Denver, December 1968 - Led Zeppelin's first North American appearance BQ - All Things Must Pass - George Harrison - I just replaced my vinyl record with the CD. LOL - I actually like Cher - I know she is a bit cheesy but she is talented. Not only has she won Grammy's but an Oscar as well.

Answer 5

There is no definite answer... If a king holds rule over a country over a certain period of time, that period would be his era... If a new king arises, a new era would then occur...

Answer 6

33

Answer 7

dude..