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Ten questions, one answer each. Mark them yourself — every option explains why.
Caliph al-Mansur built it in 762
Harun came after its builder
al-Ma'mun was Harun's son, not founder
al-Mu'tasim came generations later
al-Mansur built it circular
round, not square
circular, not star-shaped
not triangular
it stands on the Tigris' banks
the Euphrates is near, not under it
the Nile is in Egypt
the Jordan is far from it
a web of land and sea trade routes
a network, not one street
routes, not a river
caravans, not rails
traders from every direction bringing goods
Asia more than Europe
traders, not soldiers
trade, not just travellers
in al-Ma'mun's era the House of Wisdom flourished
al-Walid was Umayyad, not Abbasid
Abd al-Malik was an earlier Umayyad
Süleyman was Ottoman, centuries later
from 762 to 1258, about five centuries
a century is far less
ten centuries is more
a decade is far too short
Baghdad fell to Hulagu in 1258
Mongols, not earthquake
the river did not drown it
it fell; they did not leave
goods, books and ideas came together
ideas, not soldiers
books and ideas, not just gold
knowledge, not just slaves
the routes' junction and the learning house made it a centre
place and learning, not just size
a learning centre, not a palace
trade and learning, not army
60-second explainer · Glossary
