Marley

Māre (マーレ) is a nation inhabiting the expansive continent to the west of Paradis.

Technology
The Marleyan society is technologically more developed comparing to the society within the Walls. There are civil transports powered by battery and fossil-fuel, such as blimps and automobiles, although it seems to be available only to the wealthy, non-Eldian population. Electricity seems to be in use, as there are loudspeakers mounted on the walls surrounding the Liberio Internment Zone.

Military
The Marleyan armed forces is a rapidly-developing force which is mentioned to have made incredible advancements in military technology in recent years. These advancements are shown clearly by the triplanes and an ironclad-style warship it possesses, although it is unclear if the force has dedicated air and navy branches. Its soldiers are equipped with bolt-action rifles and revolvers.

Titan shifters
Adding to its conventional force, Marley also possess seven Titans which assure its position as a world power. This power is eclipsing, however, as advancement in technology are beginning to undermine the military importance of Titans. The Marleyan government is aware of it, therefore it planned to conquer Eldia in order to take over the immense fossil resource laying beneath the island, continuing its military supremacy in the new era. The plan was hindered by King Fritz's threat of unleashing Wall Titans upon the world in case of a Marleyan invasion.

Warriors
In order to counter King Fritz's ultimatum, the Marleyan government decided in the year 830 to grant the power of the seven Titans in their nations possession to a selection of Eldian children. The families of those chosen children were promised to be made into honorary Marleyans with all freedoms that come with the distinction.

Fifteen years later, in the year 845, Marley sent out four of their warriors, Bertolt Hoover, Reiner Braun, Annie Leonhart, and Marcel, from their settlement known as the "Hometown". These warriors were given the task of breaching the gates of the walls in order to wipe out the Eldian race and take the Coordinate, or Progenitor Titan, from the royal family. They succeeded in breaching Wall Maria, though their efforts in breaching Wall Rose were halted upon learning that Eren Yeager was had the power of the Titans, leading them to suspect that he held the Coordinate they sought. Since that revelation, the goal of the surviving warriors has been to capture Eren Yeager in order to obtain the Coordinate.

Public Security Authorities
The Public Security Authorities is responsible for controlling the Eldian minority in Marley, such as restricting Eldian movement in and out of the Liberio Internment Zone. Brutal behaviors against Eldian are encouraged within the force. For example, Gross, a PSA soldier, had his sons sadistically killed Fay by unleashing a horde of dogs upon her for entertainment. The deed did not seem to hurt his career, as by the time of Grisha's exile to Paradis he has attained, or was still keeping, the rank of Sergeant Major. Despite the brutality against the Eldians, the PSA was heavily infiltrated by the Eldian Restoration Movement to the extent that the latter was able to get its hands on censored historical records and important government documents. For example, Kruger, aka "the Owl", was a highly placed Eldian agent who managed to attain a rank at least equal to that of Gross within the PSA command hierarchy. It was not until Zeke Yeager's defection that the PSA was able to weed out most of the conspirators. The role and behavior of its troopers seems to make it analogue to the Military Police Brigade within the walls.

Trivia

 * Marley technologically resembles an early 20th century nation from our world.
 * Marley's policy of segregating Eldian into ghetto parallels . Coincidentally, some named Marleyans and Eldians have German-sounding names.
 * The history of Marleyans and Eldians is also comparable with that of the Rwandan populations of Hutu and Tutsi. By 1700, the Rwandan populace coalesced into around eight kingdoms, of which the Tutsi Kingdom of Rwanda became dominant and oppressed the Hutu, fueling a hard relationship between the two races that lasted for centuries. In 1994, during the Rwandan Civil War, the then Hutu majority government perpetrated a which resulted in the extermination of around 70% of the Tutsi population.
 * Rwanda was also a German territory from 1884 until World War I.
 * Since Isayama is Japanese, the Marleyan government's exploitation of ancient grudges for expansionist purposes might have been inspired by the, where the memory of the is kept alive by the government for nationalistic purposes. The landmass size difference between Marley and Paradis also reminds one of China and Japan.
 * The memory alterations to people on Paradis to make them forget the past might have been inspired by the Japanese government's own attempts to downplay and deny Imperial Japan's war crimes.
 * If turned upside-down and mirrored, the territories of Marley and Paradis are very similar to the real life continental territory of Africa and the island of Madagascar, respectively.
 * This also coincides with the Rwanda parallelism, as Rwanda is an African country located at the northwest of Madagascar. When turned upside-down and mirrored, Rwanda is at the southwest, and it is said that Titans primarily target the southern regions of the walls (although the exact location of Marley within the continent is still unknown).