To unify the whole country or the world under one rule.

national unification; the process of unifying a wide area or the state of being so unified

The geographical encyclopedia of the Yuan dynasty, compiled between 1285 and 1294 under [[扎马剌丁|紮馬剌丁|zha1 ma3 la2 ding1]] and [[虞应龙|虞應龍|yu2 ying4 long2]]

A massive geographical encyclopedia of the Yuan dynasty, compiled between 1285 and 1294 under the direction of [[扎马剌丁|紮馬剌丁|zha1 ma3 la2 ding1]] and [[虞应龙|虞應龍|yu2 ying4 long2]]

Official gazetteer of the Qing Dynasty, consisting of 560 volumes; it provides a comprehensive geographic record including maps, history, administration, population, and local products for every province.