Inveria

Rainbow Eyed Country was a human nation that existed in the New World, two hundred years prior to the start of the Overlord series.

Background
A country that existed two hundred years ago. It was located in the central regions of the continent in the New World. The surrounding countries were roughly the same size as the Rainbow Eyed Country.

Culture
The nation was composed of a population of 5 million people which was quite small compared to the other countries. Demographics wise, the country contained Rainbow Eyes and other races, though the former amounted to 90% of the population. The Rainbow Eyed Country also had a thriving dairy industry.

Religion
The state religion of the Rainbow Eyed Country was the Na Bel faith. It was a system of worship that had believers in the surrounding countries. While it was not a belief born of inner devotion just because it was the state religion it was used to also strengthen the bonds between the various ethnicities. One could even go further and say that they were using religion to establish ties to the surrounding nations.

Politics
The country was ruled by a feudal state with the political power being invested in the Invern Royal Family.

Military Strength
While the country was not a peaceful one, anyone with the potential to become an exceptional magic caster had to learn battle-effective spells. The magic casters in the castle of the royal family could cast 3rd tier spells.

Foreign Relations
In the recent half-century, two hundred years ago, there had not been any large-scale wars in the nearby nations too. However, that simply meant that there were no wars of conquest. This was mostly due to nations prioritizing in handling natural disaster level monsters.