Hu Xin Provinces

The Hu Xin Provinces are located in the western Earth Kingdom which border the Mo Ce Sea. In the past, they were Fire Nation colonies; however, in the aftermath of the Harmony Restoration Movement, they were annexed into the United Republic of Nations.

History
Not much is known about these provinces, except that prior to becoming Fire Lord, then-General Azulon conquered these Earth Kingdom provinces in the name of his country, winning a great victory in the Hundred Year War.

After the end of the Hundred Year War, the Hu Xin Provinces, along with all the other Fire Nation colonies throughout the Earth Kingdom, became part of the United Republic of Nations, a fifth nation founded by Avatar Aang and Fire Lord Zuko where benders and non-benders from all nations could live together in harmony.