Đàng Trong
Persistent states and detrimental impacts of feudalist warfares are the main characteristic of this 2,500-year part of Vietnam's premodern history. Stable economic development could hardly be attained even in the 17th century when trades became more active and economic conditions improved briefly in temporary peace. In pecuniary terms, both governments of Đàng Ngoài and Đàng Trong performed poorly, with persistent budget deficit–although not very serious–in mid-17th century (1746-1753). Trades, usually a precursor to any prosperous society, almost disappeared in this period, and reappeared only sporadically. Towards the end of this period, it was fortunate that King Gia Long Nguyễn Ánh now displayed a set of "fairly" efficient economic policies which helped restore the economic conditions in part, although we have not had sufficient statistics to make an appraisal on the actual output improvement under the reign of Gia Long.