Eldia

"Eldia was a great and ancient nation that destroyed Marley and came to rule our continent. That is when the Dark Ages began." - Nygren Jaeger

Eldia (エルディア Erudia?) is a nation chiefly populated by the Subjects of Ymir, a race that can turn into Titans. In ancient times, the Eldians used Titans to build their empire, slaughtering countless peoples and taking their land.[2][3][4] Eventually, the Eldian Empire grew unstable due to internal conflicts between the families with the power of the Titans, and collapsed during the Great Titan War a century ago.[5] Eldia lost most of its land as well as seven of the Nine Titans to a newly reborn Marley, and many Eldians retreated to Paradis Island, their last territory.[6] King Karl Fritz raised the Walls to protect Eldia from Marley and the other nations of the world, and erased the memories of Eldia from the Subjects of Ymir inside.[7]

After discovering the truth from Grisha Yeager's basement, the Eldians on Paradis Island embrace their true identities. Although they are officially the "nation of Eldia,"[8] the Yeagerists want to institute a New Eldian Empire (新生エルディア帝国 Shinsei Erudia Teikoku?).[9]