List of former national capitals

Columns: Old capital city | Country | Today a part of | From | Until | Change , reason
Tarnovo | Bulgarian Empire , Second | Bulgaria | 1185 | 1393 | moved to Vidin | Vidin | Bulgarian Empire , Second | Bulgaria | 1393 | 1396 | Empire ceased to exist after the Ottoman conquest | Tarnovo | Principality of Bulgaria | Bulgaria | 1878 | 1879 | moved to Sofia | Plovdiv | Eastern Rumelia | Bulgaria | 1878 | 1885 | annexed as part of the Unification of Bulgaria | Ragusa ( Dubrovnik ) | Ragusa , Republic of | Croatia | 7th century | 1808 | annexed by France | Varaždin | Croatia , Kingdom of | Croatia | 1756 | 1776 | Moved back to Zagreb , when a fire destroyed most of the city

Example questions:
Which sea was the former capital of Albania from 1914 to 1920 located on ? | What area was the former capital of Bulgaria from 893 AD to 972 AD located in ? | What river was the former capital of Bulgaria from 1185 to 1393 located on ? | What was the nickname of the city that served as the former capital of North Macedonia from 992 AD to 1018 ? | Who were the first century occupants of the area of the city which was the former capital of North Macedonia from 972 AD to 992 AD ?

Answers:
Adriatic Sea | northeastern Bulgaria | Yantra River | Jerusalem of the Balkans | Romans