Historical eras

The American Frontier comprises the geography, history, folklore, and cultural expression of life in the forward wave of American expansion that began with English colonial settlements in the early 17th century and ended with the admission of the last mainland territories as states in 1912.

The Enlightenment (also known as the Age of Enlightenment; in French: le Siècle des Lumières, lit. 'the Century of Lights'; and in German: Aufklärung, 'Enlightenment') was an intellectual movement which dominated the world of ideas in Europe in the 18th century.

A Chinese era name is the regnal year, reign period, or regnal title used when traditionally numbering years in an emperor's reign and naming certain Chinese rulers.

The Digital Revolution is the change from mechanical and analogue electronic technology to digital electronics which began anywhere from the late 1950s to the late 1970s with the adoption and proliferation of digital computers and digital record keeping that continues to the present day.

The Age of Discovery is an informal and loosely defined European historical period from the 15th century to the 18th century, marking the time in which extensive overseas exploration emerged as a powerful factor in European culture and globalization.

An agrarian society (or agricultural society) is any society whose economy is based on producing and maintaining crops and farmland.

Axial Age (also Axis Age, from German German: Achsenzeit) is a term coined by German philosopher Karl Jaspers in the sense of a "pivotal age" characterizing the period of ancient history during about the 8th to 3rd centuries BC.

The Jacobean era refers to the period in English and Scottish history that coincides with the reign of James VI of Scotland (1567–1625), who also inherited the crown of England in 1603 as James I.

In Swedish and Finnish history, the Age of Liberty (Swedish: Frihetstiden) is a half-century-long period of parliamentary governance and increasing civil rights, beginning with Charles XII's death in 1718 and ending with Gustav III's self-coup in 1772.

Gründerzeit (German pronunciation: [ˈɡʁʏndɐˌtsaɪt], literally: “founders’ period”), was the economic phase in 19th-century Germany and Austria before the great stock market crash of 1873.

Helladic is a modern archaeological term meant to identify a sequence of periods characterizing the culture of mainland ancient Greece during the Bronze Age.

The Space Age is a time period encompassing the activities related to the Space Race, space exploration, space technology, and the cultural developments influenced by these events.

The Industrial Age is a period of history that encompasses the changes in economic and social organization that began around 1760 in Great Britain and later in other countries, characterized chiefly by the replacement of hand tools with power-driven machines such as the power loom and the steam engine, and by the concentration of industry in large establishments.

The Napoleonic era is a period in the history of France and Europe.

Post-classical history (also called the Post-Antiquity era, Post-Ancient Era, or Pre-Modern Era) is the period of time that immediately followed ancient history and preceded the modern history.

Turn of the century, in its broadest sense, refers to the transition from one century to another.