Map of Asia in 1 AD (1 CE)

The Han dynasty was an imperial dynasty of China established by Liu Bang, and preceded by the short-lived Qin dynasty (221–206 BC) and the interregnum known as the Chu–Han Contention (206–202 BC). It was succeeded by the Three Kingdoms period (220–280 AD) and also briefly interrupted by the Xin dynasty (9–23 AD) established by the usurping regent Wang Mang.

Mapped extent in 1 CE: 4.47M km²

The Roman Empire was a state that dominated the Mediterranean and much of Europe, Western Asia, and North Africa during the classical period. The Roman Republic had previously conquered most of these territories, which later came under permanent single-person rule following Octavian's rise to power and the establishment of the Augustan Principate in 27 BC.

Mapped extent in 1 CE: 3.55M km²

The Parthian Empire, also known as the Arsacid Empire, was a major Iranian political and cultural power centered in ancient Iran from 247 BC to 224 AD. Its latter name comes from its founder, Arsaces I, who led the Parni tribe in conquering the region of Parthia in Iran's northeast, then a satrapy (province) under Andragoras, who was rebelling against the Seleucid Empire.

Mapped extent in 1 CE: 2.70M km²

The Xiongnu were a tribal confederation of nomadic peoples who, according to ancient Chinese sources, inhabited the eastern Eurasian Steppe from the 3rd century BC to the late 1st century AD. Modu Chanyu, the supreme leader after 209 BC, founded the Xiongnu Empire.

Mapped extent in 1 CE: 2.40M km²

The Satavahanas, also referred to as the Andhras in the Puranas, were an ancient Indian dynasty. Most modern scholars believe that the Satavahana rule began in the late 2nd century BCE and lasted until the early 3rd century CE, although some assign the beginning of their rule to as early as the 3rd century BCE based on the Puranas, but uncorroborated by archaeological evidence.

Mapped extent in 1 CE: 890,001 km²

The Indo-Scythians, also known as Indo-Sakas, were a group of nomadic people of Iranic Scythian origin who migrated from Central Asia southward into the present-day regions of Afghanistan, eastern Iran and the northwestern Indian subcontinent. The migrations persisted from the middle of the second century BCE to the fourth century CE.

Mapped extent in 1 CE: 832,001 km²