Buried stashes of coins can help reveal the population history of a given time period, a new study suggests.
The research focused on the first century BC in Italy, a culturally a brilliant age, unequaled by any other period in Roman history. It was a time of Cicero, Caesar, Virgil, Horace and other major literary figures.
Yet some basic facts—like the approximate population size of the late Roman Republic—remain under intense debate. Depending on who historians believe was counted in the early Imperial censuses, the Italian population either declined or more than doubled in that century.
If the higher count is right, much of Roman history would have to be re-written and it would have huge implications on the popular view of the economic potential and social structure of ancient Rome, according to historian Walter Scheidel of Stanford University in California and theoretical biologist Peter Turchin of the University of Connecticut.
The two researchers tried to resolve the debate by focusing on the region’s prevalence of coin hoards, those bundles of buried treasure that people hid to protect their savings during times of great violence and political strife. The pair worked on the theory that more stashes means a dropping population, due to the greater frequency of violence.
“Hoards are an excellent indicator of internal turmoil,” said Turchin. “This is a general phenomenon, not just in Rome.”






