HUE IMPERIAL CITY: Construction of the Imperial City started 1 (on/ in/ at/ for) 1805, under the reign of Emperor Gia Long

HUE IMPERIAL CITY
Construction of the Imperial City started 1 (on/ in/ at/ for) 1805, under the reign of Emperor Gia Long, and 2 (is/ were/ are/ was) completed in 1832, under the reign of Emperor Minh Mang. Built 3 (on/ in/ at/ above) the northern bank of 4(a/ the/ an/ X) Perfume River, the Imperial City was influenced by the style of French architect Vauban. Hue Imperial City was listed as a Wordl Cultural Heritage by UNESCO in 1993. The city 5 (comprised/ comprising/ will comprise/ comprises) three sections: the Royal Citadel, the Imperial Enclosure and the Forbidden Purple City. Every year millioms of people come to visit this history place.