Uruk IV proto-cuneiform accounting beginsJan 1, 3350 BCELabels: Uruk Eanna, Proto-cuneiform, AccountingCDLICDLI Wiki
Lexical lists emerge in Uruk IV tabletsJan 1, 3200 BCELabels: Uruk IV, Lexical lists, Scribal toolCDLI Wiki
Uruk III reforms make signs more abstractJan 1, 3200 BCELabels: Uruk III, Sign reform, Tablet layoutCDLI WikiProto cuneiform
Jemdet Nasr period continues proto-cuneiform useJan 1, 3100 BCELabels: Jemdet Nasr, Proto-cuneiform, Central administrationJemdet NasrJemdet Nasr
City-seal administration attested in Uruk IIIJan 1, 3100 BCELabels: City seals, Sealings, Uruk IIICity SealsJemdet Nasr
Early Dynastic I begins; cuneiform consolidatesJan 1, 2900 BCELabels: Early Dynastic, Cuneiform, Sumerian city-statesCulture govED Mesopotamia
Uruk scribal tradition spreads across southern citiesJan 1, 2800 BCELabels: Southern Mesopotamia, Scribal diffusion, Ur originCulture govShuruppak Britannica
Fara period begins; syllabic writing evidencedJan 1, 2600 BCELabels: Fara period, Syllabic writing, ShuruppakHistory SumerCDLI Wiki
Early Dynastic III peaks in cuneiform documentationJan 1, 2600 BCELabels: Early Dynastic, Cuneiform corpus, City administrationCulture govED Mesopotamia
Akkadian Empire adopts and extends cuneiformJan 1, 2334 BCELabels: Akkadian Empire, Cuneiform, SargonAkkadianSargon WorldHistory
Akkadian period ends; Ur III followsJan 1, 2154 BCELabels: Akkadian period, Ur III, Political reorganizationAkkadianUr III Britannica
Ur III scribal schools preserve and expand literatureJan 1, 2112 BCELabels: Ur III, Scribal schools, Sumerian literatureUr III BritannicaUr III
Traditional endpoint for this arc: post-Ur III transitionJan 1, 2004 BCELabels: Post-Ur III, Political transition, Isin-LarsaUr III BritannicaUr III