Pax Sinica is a historiographical term referring to periods of peace and stability in East Asia, Northeast Asia, Southeast Asia, and Central Asia led by China. A study on the Sinocentric world system reveals that the multiple periods of Pax Sinica, when taken together, amounted to a length of approximately two thousand years.
The Portraits of Periodical Offering of Liang. A 6th-century painting in National Museum of China depicting tributary envoys from right to left: Uar (Hephthalites); Persia; Baekje (Korea); Qiuci; Wo (Japan); Langkasuka (in present-day Malaysia); Dengzhi (鄧至) (Qiang) Ngawa; Zhouguke (周古柯), Hebatan (呵跋檀), Humidan (胡密丹), Baiti (白題, similar to the Hephthalite people), who dwell close to Hephthalite; Mo (Qiemo).
The Pax Romana is a roughly 200-year-long period of Roman history which is identified as a golden age of increased and sustained Roman imperialism, relative peace and order, prosperous stability, hegemonic power, and regional expansion. This is despite several revolts and wars, and continuing competition with Parthia. It is traditionally dated as commencing with the accession of Augustus, founder of the Roman principate, in 27 BC and concluding in AD 180 with the death of Marcus Aurelius, the last of the "Five Good Emperors".
Extent of the Roman Empire under Augustus. Yellow represents the extent of the Republic in 31 BC, while green represents gradually conquered territories under the reign of Augustus, and pink areas represent client states.
AR Antoninianus of Gordian III, struck at Antioch 243–244 AD with Pax Augusta on the reverse
