Relation between British Hong Kong and Canton Prefecture

Fix boundary of Limchow Prefecture

Fix name of Chaochow

Fix name of Kiungchow

Prefectural cities in Kwangtung

Import prefectures of Kwangtung from OSM

Import prefectures of Kwangtung from OSM

Import Kwangtung from OSM

Import Kwangtung from OSM

Qing in 1644-1842

Qing in 1644-1842

Fix label of Korea

Qing in 1881-1895.

Korea before WWI.

關東州 boundary

Japan from 1879 to surrendered.

Japan after the surrender

Import boundary of Japan from OSM to OHM.

Qing (the same boundary with ROC in 1912).

Korea in 1948-1953.