Biograd na Moru

City · c. 926 CE · in Europe

Capital of Kingdom of Croatia (926–1098).

Nin (c. 926 CE): Capital of Kingdom of Croatia (926–1098).
Jiangling County (c. 926 CE): Capital of Jingnan (926–963).
Daming County (c. 926 CE): Capital of Later Tang (926–935).
Rouen (c. 922 CE): Capital of Duchy of Normandy (922–1071).
Koh Ker (c. 922–944 CE): Capital of Khmer Empire (922–944).
Lindong Town (c. 918 CE): Capital of Liao Dynasty (918–938).
Guangzhou (c. 917 CE): Capital of Southern Han (917–971).
Shangjing Linhuangfu (c. 916 CE): Capital of Liao Dynasty (916–1125).
Liao Nanjing (c. 916–1153 CE): Capital of Liao Dynasty (916–1125).
Thingvellir National Park (c. 936 CE): Capital of Icelandic Commonwealth (936–1262).

Around the same time and place

Founding of Kievan Rus' (882 CE): Oleg of Novgorod took Kyiv and made it his capital, creating the state of Kievan Rus', which united East Slavic lands under the Rurik dynasty.
Cyrillic script (c. 893 CE): Scholars in the First Bulgarian Empire, probably at Preslav, built a Slavic alphabet mainly from Greek letters; Cyrillic now writes Russian, Ukrainian, Bulgarian, Serbian and many more.
Founding of the Holy Roman Empire (962 CE): Pope John XII crowned Otto I emperor in Rome, the conventional start of the Holy Roman Empire, which lasted until 1806.
Trier (16 BCE – 1618 CE): Capital of Electorate of Trier (1333–1618).
Varangians to the Greeks (c. 800–1100 CE): Scandinavian traders and warriors travelled from the Baltic up the Neva and Volkhov past Novgorod, portaged to the Dnieper and sailed down past Kiev to the Black Sea and Constantinople.
Alfred the Great (849 CE – 899 CE): King of Wessex who defended his kingdom against the Vikings, reorganised its defences and promoted learning in English.
Hungarian conquest (c. 895 CE): Magyar tribes led by Árpád crossed the Carpathians and settled the Pannonian Basin, laying the foundation of the Hungarian state.
Székesfehérvár (c. 900 CE): Capital of Principality of Hungary (900–999), Kingdom of Hungary (1000–1543).