The 800,000 Dead at Baghdad: Weighing a Patronized Chronicle Against a Merchant's Letter
A student is preparing a source analysis on the Mongol siege of Baghdad in 1258. She has two accounts. Account A is a Persian chronicle written about 1280 by a historian attached to the Ilkhanid court; it states that 800,000 people died and calls the caliph's execution a divine punishment. Account B is a letter written in 1258 by a Baghdadi merchant who fled to Mosul; it describes ten days of looting, the burning of the library, and the flight of scholars, but gives no death count. The student's teacher asks whether the two sources can be used together to establish what happened. The student notes that Account A's patron was the Mongol ruler, that the chronicle was written two decades later, and that the merchant was an eyewitness but a trader with no access to military records. The class must decide how to characterize the reliability of each source and what additional evidence would be most useful.
1. Explain how the patronage and timing of Account A affect its usefulness as evidence about the siege. Distinguish between what the chronicle can reliably show and what it cannot.
Read the worked answer
Patronage does not make a source automatically false, but it shapes what gets recorded and why. A chronicler attached to the Ilkhanid court had incentives to present the conquest as decisive and as a justified or divinely ordained event. That makes the chronicle strong evidence for how the Mongol court and its Persian administrators wanted the siege remembered, and for the kinds of claims circulating a generation later. It is weak evidence for the exact figure of 800,000: the number is round, uncorroborated, and written about 22 years after the event, when later political needs could inflate or reinterpret casualties. The chronicle cannot by itself establish mortality. It can reliably show that Baghdad's fall was framed as catastrophic and punitive. The student should treat the figure as a claim to be tested, not a fact to be repeated.
2. A classmate argues that Account B's silence on the death toll proves the massacre was smaller than Account A claims. Evaluate that reasoning.
Read the worked answer
The argument treats silence as evidence of absence, which is unsafe. Account B is a merchant's letter written during flight; the writer had limited access to military operations, was concerned with looting, libraries, and survival, and may simply not have known a total. Genres have conventions: a trader's letter is not a census. His silence could mean the death toll was lower, but it could also mean he lacked information, feared exaggeration, or focused on what affected him. The letter does corroborate looting and the flight of scholars, so it is useful for those claims. To test the 800,000 figure, the student needs independent records-tax registers, waqf endowment records, archaeological destruction layers, or multiple chronicles from different patronage networks-not an argument from silence.
3. Identify one additional type of source and explain how it would help test the 800,000 figure.
Read the worked answer
A tax or endowment register (waqf) would help because it records properties, stipends, and named beneficiaries in Baghdad before and after 1258. If registers from the 1260s list a substantial share of the city's quarters, mosques, and scholars, that would suggest continuity and make an immediate 800,000 death figure harder to sustain; if large areas are recorded as ruined or reassigned, it would support severe disruption. The source would not give a body count, but it would provide an independent administrative baseline for population and institutions. The reasoning matters: the student should choose a source that measures something other than the chronicle's rhetorical claim, so that corroboration is genuine rather than circular. Archaeological evidence of destruction layers could serve similarly.