0s


The 0s began on January 1, AD 1 and ended on December 31, AD 9, covering the first nine years of the Common Era.
In Europe, the 0s saw the continuation of conflict between the Roman Empire and Germanic tribes in the Early Imperial campaigns in Germania. Vinicius |Vinicius], Tiberius and Varus led Roman forces in multiple punitive campaigns, before sustaining a major defeat at the hands of Arminius in the Battle of the Teutoburg Forest. Concurrently, the Roman Empire fought the Bellum Batonianum against a rebelling alliance of native peoples led by Bato the Daesitiate in Illyricum, which was suppressed in AD 9. A conflict also took place in Korea, where Daeso, King of Dongbuyeo invaded Goguryeo with a 50,000-man army in AD 6. He was forced to retreat when heavy snow began to fall, stopping the conflict until the next decade. In China, the last ruler of the Chinese Western Han dynasty was deposed, allowing Wang Mang to establish the Xin dynasty.
Literary works from the 0s include works from the ancient Roman poet Ovid; the Ars Amatoria, an instructional elegy series in three books, Metamorphoses, a poem which chronicles the history of the world from its creation to the deification of Julius Caesar within a loose mythico-historical framework, and Ibis, a curse poem written during his years in exile across the Black Sea for an offense against Augustus. Nicolaus of Damascus wrote the 15-volume History of the World.
Estimates for the world population by AD 1 range from 170 to 300 million. A census was concluded in China in AD 2: final numbers showed a population of nearly 60 million. The census is one of the most accurate surveys in Chinese history.

Calendar details

Because there is no year zero in the Gregorian calendar, this period is one of two "1-to-9" decade-like timespans that contain only nine years, along with the 0s BC. The Anno Domini calendar era which numbers these years 1-9 was devised by Dionysius Exiguus in 525, and became widely used in Christian Europe in the 9th century. Dionysius assigned BC 1 to be the year he believed Jesus was born. Modern scholars disagree with Dionysius' calculations, placing the event several years earlier.
Errors applying leap years in the Julian Calendar affect parts of this 1-to-9 timespan. As a result, sources differ as to whether, for example, AD 1 was a common year starting on Saturday or Sunday. It was a common year starting on Saturday by the proleptic Julian calendar, and a common year starting on Monday by the proleptic Gregorian calendar. It is the epoch year for the Anno Domini Christian calendar era, and the 1st year of the 1st century and 1st millennium of the Christian or Common Era.

Politics and wars

Heads of state

For brevity, only the most powerful and hegemonic states of the period are included. See list of state leaders in the 1st century for a broader list. Furthermore, the last year of a reign is excluded from this table if it lasted multiple years.

Wars

Events

Africa

Estimates for the world population in 1 AD range from 150 to 300 million. The below table summarizes estimates by various authors.
PRB
UN
Maddison
.
"The historical data were originally developed in three books: Monitoring the World Economy 1820-1992, OECD, Paris 1995; The World Economy: A Millennial Perspective, OECD Development Centre, Paris 2001; The World Economy: Historical Statistics, OECD Development Centre, Paris 2003. All these contain detailed source notes. Figures for 1820 onwards are annual, wherever possible. For earlier years, benchmark figures are shown for 1 AD, 1000 AD, 1500, 1600 and 1700." "OECD countries GDP revised and updated 1991-2003 from National Accounts for OECD Countries, vol. I, 2006. Norway 1820-1990 GDP from Ola Grytten, "The Gross Domestic Product for Norway, 1830-2003" in Eitrheim, Klovland and Qvigstad, Historical Monetary Statistics for Norway, 1819-2003, Norges Bank, Oslo. Latin American GDP 2000-2003 revised and updated from ECLAC, Statistical Yearbook 2004 and preliminary version of the 2005 Yearbook supplied by Andre Hofman. For Chile, GDP 1820-2003 from Rolf Lűders, "The Comparative Economic Performance of Chile 1810-1995", Estudios de Economia, vol. 25, no. 2, with revised population estimates from Diaz, J., R. Lűders, and G. Wagner Chili 1810-2000: la Republica en Cifras, mimeo, Instituto de Economia, Universidad Católica de Chile. For Peru, GDP 1896-1990 and population 1896-1949 from Bruno Seminario and Arlette Beltran, Crecimiento Economico en el Peru 1896-1995, Universidad del Pacifico, 1998. " "For Asia there are amendments to the GDP estimates for South and North Korea, 1911-74, to correct an error in Maddison. Estimates for the Philippines, 1902-1940 were amended in line with Richard Hooley, 'American Economic Policy in the Philippines, 1902-1940', Journal of Asian Economics, 16. 1820 estimates were amended for Hong Kong, the Philippines, Singapore, Sri Lanka, Taiwan and Thailand." "Asian countries GDP revised and updated 1998-2003 from AsianOutlook, April 2005. Population estimates for all countries except China and Indonesia revised and updated 1950-2008 and 2030 from International Data Base, International Programs Center, Population Division, US Bureau of the Census, April 2005 version. China's population 1990-2003 from China Statistical Yearbook 2005, China Statistics Press, Beijing. Indonesian population 1950-2003 kindly supplied by Pierre van der Eng. The figures now include three countries previously omitted: Cook Islands, Nauru and Tuvalu."		HYDE
Tanton
Biraben
McEvedy &
Jones 		Thomlinson
Durand
Clark |Clark]
300M300M231M188M150M255M170M200M270–330M256M

Significant people