… and its spread to other (2) _____ of East Asia.

The citadel buildings represent an outstanding example of a new (10) ______  of Southeast Asian imperial city with a combination between the Vietnamese architecture and the unique building techniques of Southeast Asia and Eastern Asian.

The citadel of the Ho Dynasty is an architectural (9) _____ of the 14th century with impressive architecture of the walls and other parts.

… have not been (8) _____  by time and weather or by recent urban encroachment.

Thanks to the unique construction techniques, all the (7) _____ stone sections are intact…

It shows the uniqueness (6) _____ the construction of a citadel in general and a stone citadel in particular, and a breakthrough in Viet Nam’s tradition of citadel building.

In terms of architectural history, the citadel of the Ho Dynasty (5) ______ an important role in the planning and building of urban areas in Viet Nam.

… on an axis (4) _____ the Tuong Son and Don Son Mountains in a plain between the Ma and Buoi Rivers.