Polybius
Polybius (; , "Polýbios"; –  BC) was a Greek historian of the Hellenistic period. He is noted for his work , which covered the period of 264–146 BC and the Punic Wars in detail. 

Polybius is important for his analysis of the mixed constitution or the separation of powers in government, his in-depth discussion of checks and balances to limit power, and his introduction of "the people", which was influential on Montesquieu's "The Spirit of the Laws", John Locke's Two Treatises, and the framers of the United States Constitution.

The leading expert on Polybius was F. W. Walbank (1909–2008), who published studies related to him for 50 years, including a long commentary of his "Histories" and a biography.
Q539051
Greek
Concept
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Hellenistic period
Concept
Q124988
Punic Wars
EVE
Q79896
separation of powers
Concept
Q15975
Montesquieu
PER
Q514727
The Spirit of the Laws
ORG
Q9353
John Locke
PER
Q231949
Two Treatises
ORG
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United States Constitution
ORG
Q1444396
F. W. Walbank
PER
Q131169
Polybius
PER
Q131169
Polybius
PER
Q131169
Polybius
PER
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146
NUMBER
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1909
NUMBER
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2008
NUMBER
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50
NUMBER
time period
notable work
author
notable work