To protect soldiers and supplies from US bombing the Vietcong built underground bunkers.
For the answer to the question above, it is the root of the aspect of what they call "federalism" within the country’s government system, it means that although power is shared between the federal government and the states, the federal government reigns supreme.
With goods being able to produced at a rapid rate, many factories became to appear as a means to seek profit and meet rising demands for goods. This resulted in rapid industrialization and creation of urban centers.
I think the right answers is Georgia
