Đàng Ngoài
AREA IN NORTH VIETNAM DURING THE 17TH AND 18TH CENTURIES
Bắc Hà (country)
Đàng Ngoài (, lit. "Outer Land"), also known as Tonkin, Bắc Hà (北河, "North of the River") or Kingdom of Annam (安南國) by foreigners, was an area in northern Đại Việt (now Vietnam) during the 17th and 18th centuries as the result of Trịnh–Nguyễn War.