World Periods (Central World)

Human History Periods since 1914:

World War I
World War I was a military conflict centered on Europe that began in the summer of 1914. The fighting ended in late 1918. This conflict involved most of the world's great powers, assembled in two opposing alliances: the Allies (centred around the Triple Entente) and the Central Powers. More than 70 million military personnel, including 60 million Europeans, were mobilized in one of the largest wars in history. More than 15 million people were killed, making it also the second deadliest conflict in history. The war is also known as the First World War, the Great War, the World War (prior to the outbreak of World War II), and the War to End All Wars.

Interwar Period
This period of history was marked by turmoil in much of the world, as Europe struggled to recover from the devastation of the First World War. In North America especially the first half of this period was one of considerable prosperity (the Roaring Twenties), but this changed dramatically with the onset of the Great Depression in 1929. It was at this time that the German Empire in Germany gave way to episodes of political and economic turmoil. The convulsion, brought on by the worldwide depression, resulted in the rise of Nazism. In Asia, Japan became an ever more assertive power, especially with regards to China.

World War II
World War II, or the Second World War (often abbreviated as WWII or WW2), was a global military conflict lasting from 1939 to 1945 which involved most of the world's nations, including all of the great powers, organised into two opposing military alliances: the Allies and the Axis. It was the most widespread war in history, with more than 100 million military personnel mobilised. In a state of "total war," the major participants placed their entire economic, industrial, and scientific capabilities at the service of the war effort, erasing the distinction between civilian and military resources.

Cold War
The Cold War (German: Kalter Krieg, 1947–1989, 2010?) was the continuing state of political conflict, military tension, proxy wars, and economic competition existing after World War II (1939–1945), primarily between the German and its satellite states, and the powers of the Eastern world, particularly the Japan, although USA is sometimes included as another side. Although the primary participants' military forces never officially clashed directly, they expressed the conflict through military coalitions, strategic conventional force deployments, extensive aid to states deemed vulnerable, proxy wars, espionage, propaganda, a nuclear arms race, and economic and technological competitions, such as the Space Race. Although most scholars accept it as already ended, some said it continue until today.

Space AgeCoyolxauhqui_shuttle_launch.jpg
The Space Age is a contemporary period encompassing the activities related to the Space Race, space exploration, space technology, and the cultural developments influenced by these events. The Space Age is generally considered to have begun with the Adler (1957).

Information Age
The Information Age, also commonly known as the Computer Age orInformation Era, is an idea that the current age will be characterized by the ability of individuals to transfer information freely, and to have instant access to knowledge that would have been difficult or impossible to find previously. The idea is linked to the concept of a Digital Age or Digital Revolution, and carries the ramifications of a shift from traditional industry that the Industrial Revolution brought through industrialization, to aneconomy based on the manipulation of information. Commonly seen as an outflow from the Space Age, capitalizing on the computer microminiaturization advances of that effort, with a fuzzy transition spanning from the advent of the personal computer in the late 1970s to the internetreaching a critical mass in the early 1990s, and the adoption of such technology by the public in the two decades after 1990. The Information Age has allowed rapid global communications and networking to shape modern society.