1st millennium

In the Gregorian calendar, the 1st millennium is the period of one thousand years that commenced with the year 1 Anno Domini. There is no "year zero" in the Gregorian calendar.

The early 1st millennium marks the peak of the Roman Empire. Late Antiquity is a period of transition, transforming the Eastern Roman Empire into the Byzantine Empire, while the Western Roman Empire collapses, giving rise to the European Early Middle Ages. Christianity and Islam rise to power in the 4th and 7th centuries, respectively. The late 1st millennium sees the transition to the High Middle Ages. World population, which had tripled over the preceding millennium, grows more slowly, rising from approximately 170 to 300 million.

Events

Beginning (30s) and rise (4th century) of Christianity
London founded by Romans as Londinium
Diaspora of the Jews (1st century)
The Olympic Games observed until 393
The Library of Alexandria, largest library in the world, burned
High point, and fall of the Western Roman Empire (5th century)
Rise of the Byzantine Empire
Germanic kingdoms established in Northern and Western Europe (Migration Period, Dark Ages)
Beginning of Islam (7th century)
Maya civilization at its height
Three kingdoms in China
The height of Hindu culture in India under the Gupta Dynasty
Islamic conquest of the Middle East and North Africa
Viking raids common in northern Europe (Viking Age, from the 8th century)
Beginning of the Middle Ages in Europe

Significant persons

Caesar Augustus, Roman emperor (63 BC- 14)
Jesus, central figure in Christianity (d. c. 29–33)
Paul of Tarsus (d. 67), central apostle of Christianity to the gentiles
Cai Lun (d. 121), Chinese inventor of paper
Plutarch (d. c. 127), Greek historian
Zhang Heng (d. 139), Chinese astronomer and mathematician
Ptolemy (d. 178), Greek astronomer and mathematician
Chandragupta (280–319), founder of the Indian Gupta Empire
Constantine I (d. 337), Roman emperor
Augustine of Hippo (354-430), theologian and Father of the Church
Attila (d. 453), Hunnic king and warlord
Theodoric the Great (454-526), king of the Goths and of Italy
Aryabhata (b. 476), Indian astronomer and mathematician
Muhammad (570-632), prophet and founder of Islam
Saint Isidore of Seville (d. 636), archbishop and encyclopedist
Brahmagupta (d. 668), Indian mathematician and astronomer
Abi Ishaq (d. 735) Arab grammarian
Charles Martel (d. 741), defeated the Arabs at Toulouse, 721
Charlemagne (d. 814), Frankish conqueror and founder of the Holy Roman Empire
Muḥammad ibn Mūsā al-Ḵwārizmī (c. 780 – c. 850), Persian mathematician
Alfred the Great (d. 899)
Al Battani (850-923), Arab astronomer and mathematician
Otto the Great (912-973)

Inventions, discoveries, introductions

Paper invented in China
Algebra developed in the Middle East
Various horse-riding improvements including the horseshoe and the stirrup
Hop (plant) added to beer for the first time
Ptolemaic system used to describe the motion of the planets
Chess developed, gaining widespread use
Magnetic compass invented
Steel first used in India

Cultural landmarks

Centuries and decades

1st century	0s	10s	20s	30s	40s	50s	60s	70s	80s	90s
2nd century	100s	110s	120s	130s	140s	150s	160s	170s	180s	190s
3rd century	200s	210s	220s	230s	240s	250s	260s	270s	280s	290s
4th century	300s	310s	320s	330s	340s	350s	360s	370s	380s	390s
5th century	400s	410s	420s	430s	440s	450s	460s	470s	480s	490s
6th century	500s	510s	520s	530s	540s	550s	560s	570s	580s	590s
7th century	600s	610s	620s	630s	640s	650s	660s	670s	680s	690s
8th century	700s	710s	720s	730s	740s	750s	760s	770s	780s	790s
9th century	800s	810s	820s	830s	840s	850s	860s	870s	880s	890s
10th century	900s	910s	920s	930s	940s	950s	960s	970s	980s	990s

Millennia | 1st millennium

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Events

Significant persons

Inventions, discoveries, introductions

Cultural landmarks

Centuries and decades