Kanchipuram

City · c. 283 CE · in South Asia

Capital of Late Pallava Empire (283–805).

Al-Hirah (c. 270–602 CE): Capital of Lakhmid Kingdom (270–602).
San Marino (301 CE): Capital of Republic of San Marino (1797–1799).
Jeju (c. 263 CE): Capital of Tamna (263–1278).
Cologne (c. 261 CE): Capital of Gallic Empire (261–274).
Palmyra (c. 261–1929 CE): Capital of Palmyrene Empire (261–269).
Washim (c. 260 CE): Capital of Vakataka Kingdom (260–500).
Linfen (c. 306 CE): Capital of Former Zhao (306–329).
Ye (c. 337–576 CE): Capital of Later Zhao (337–351), Northern Qi (555–576).
Ji (c. 337 CE): Capital of Former Yan (337–370).
Luoyang (c. 224 CE): Capital of Cao Wei (224–264), Western Jin (266–420), Eastern Wei (534–550), and 1 more.

Around the same time and place

Maritime Silk Road (c. 200 BCE – c. 1500 CE): Sea lanes linking southern China, Southeast Asia, India, Arabia, East Africa and Egypt, carrying silk, ceramics, spices and textiles on the monsoon winds.
Ujjain (c. 600 BCE – c. 405 CE): Capital of Janapada of Avanti (600 BCE–405 BCE), Western Satraps (43–405).
Sangam literature (c. 300 BCE – c. 300 CE): Earliest body of Tamil poetry, associated with academies at Madurai and composed roughly between 300 BCE and 300 CE.