3rd century in the context of "Crimean Goths"

The Stadiasmus Maris Magni or Stadiasmus sive Periplus Maris Magni (Ancient Greek: Σταδιασμός ήτοι περίπλους της μεγάλης θαλάσσης) is an ancient Roman periplus or guidebook detailing the ports sailors encounter on the shores of the Mediterranean Sea. The stadiasmus provides distances, sailing directions and descriptions of specific ports. It was written in Ancient Greek and survives in fragments. The work was written by an anonymous author and is dated to the second half of the third century AD. The most complete Greek text together with a Latin translation was published in 1855 by Karl Müller as part of his work Geographi Graeci Minores.

Scoti or Scotti is a Latin name for the Gaels, first attested in the late 3rd century. It originally referred to all Gaels, first those in Ireland and then those who had settled in Great Britain as well; it later came to refer only to Gaels in northern Britain. The kingdom to which their culture spread became known as Scotia or Scotland, and eventually all its inhabitants came to be known as Scots.

A parma or parmula (the diminutive of parma) was a type of round shield used by the Roman army, especially during the later period of imperial history since the 3rd century.

Champa (Cham: ꨌꩌꨛꨩ, چمڤا; Khmer: ចាម្ប៉ា; Vietnamese: Chiêm Thành 占城 or Chiêm Bà 占婆; modern Vietnamese Chăm Pa) was a collection of independent Cham polities that extended across the coast of what is present-day central and southern Vietnam from approximately the 2nd century AD until 1832.

According to earliest historical references found in ancient sources, the first Cham polities were established around the 2nd to 3rd centuries AD, in the wake of Khu Liên's rebellion against the rule of China's Eastern Han dynasty, and lasted until when the final remaining principality of Champa was annexed by Emperor Minh Mạng of the Vietnamese Nguyễn dynasty as part of the expansionist Nam tiến policy. The kingdom was known variously as Nagaracampa (Sanskrit: नगरचम्प), Champa (ꨌꩌꨛꨩ) in modern Cham, and Châmpa (ចាម្ប៉ា) in the Khmer inscriptions, Chiêm Thành in Vietnamese, Campa in Malay, Zhànchéng (Mandarin: 占城) in Chinese records, and al-Ṣanf (Arabic: صَنْف) in Middle Eastern Muslim records.

Scotia is a Latin placename derived from Scoti, a Latin name for the Gaels, first attested in the late 3rd century. The Romans referred to Ireland as "Scotia" around 500 A.D. From the 9th century on, its meaning gradually shifted, so that it came to mean only the part of Britain lying north of the Firth of Forth: the Kingdom of Alba. By the later Middle Ages it had become the fixed Latin term for what in English is called Scotland.

The history of the Jews in Austria starts after the exodus of Jews from Judea under Roman occupation. There have been Jews in Austria since the 3rd century CE. Over the course of many centuries, the political status of the community rose and fell many times: during certain periods, the Jewish community prospered and enjoyed political equality, and during other periods it suffered pogroms, deportations to concentration camps and mass murder, and further antisemitism. The Holocaust drastically reduced the Jewish community in Austria and only 8,140 Jews remained in Austria according to the 2001 census. As of 2020, Austria had a Jewish population of 10,300 and a total of 33,000 when including any Austrian with at least one Jewish grandparent.