The political situation is also problematic in its believability, as the natives blindly trust and follow the MC, giving him all decision-making for the thousands of people without any hint of attempts of opposition. It appears as if the the MC has become a dictator with absolute control, although with the love and support of his subjects. It feels to me like the author strips away the natives' humanity and makes them sheep for the benefit of accelerating the plot.

The first thing that the MC does upon arrival is converting the tribe from hunter-gatherers into agriculturalists, in order to better feed the people and to stockpile food for future expansion and population growth. He also develops cotton crops into clothing, although with very little explanation and details about how he does it. Somehow, after some time, everyone now has comfortable clothing.

Once the tribe is well fed and clothed, they builds blast furnaces from scratch to develop iron and steel works in a couple of years, to a point which took real world civilizations centuries to reach. There isn't much detail about how the MC was able to procure the materials or the process of building them. He then leads a detached team to travel round trip to the Appalachian mountains from their settlement on the Mississippi river to setup a new village for the purpose of mining for better iron ore, but either the Google translation was bad, or they cover the real life one-way distance of over 500km in some days of walking while carrying ore on their shoulders to take them back to the main settlement where the blasts furnaces are located, all without the use of carts.

Now with enough ore and production capacity, they make enough steel weapons and armor for 2000 warriors, and successfully defend themselves with superior tactics and win over an invading army of 15000 (somewhat of a stretch) composed of warriors from surrounding tribes which only had stone tools. The enemy surrenders their 60000 people to the MC's tribe (the ones who did not already flee upon hearing the news for the escaping losers) and they become indentured s*aves for at least 5 years to work in the mines. The 2000 warriors continue to fan out and subjugate other surrounding tribes to convince them to merge tribes, most agreeing peacefully although with apprehension, while some were subjugated by force.

After 10 years or so, the population balloons to 2 million from the original of several thousands, thus succeeding in solving the MC's constant problem with the lack of manpower for his plans for technological developments. What seems a bit of a stretch is the ability to plant and grow enough crops to feed so many people in such a short amount of time in order for them to change their work from hunting-gathering into technical jobs. And somehow, the people accepted their new jobs, whether assigned or self chosen, without hints of any opposition, or without any form of monetary system to reward them for their work.

To initiate better public housing and facilities, they create brick and cement plants and start building brick homes in the capital as a "model city" for other villages to follow as an example. The author only ever mentions bricks, bricks, and more bricks. There is no mention of the foundations, how the floors are made, or even the roofs, so it's very difficult to imagine what the houses look like or their internal structure. Soon they build a palace out of stone for the MC to live and work in, without much detail either. The author never describes any of the other villages, only a little bit in the beginning about the original mining outpost, so it's difficult to understand the structure of the civilization.

Throughout the story, the MC is completely overworked, working nonstop without rest and a lack of sleep for 10 years. He is unable to find enough time to start on other technological developments that he wants to do. To solve this, the author includes a short scene where a native couple who work in a wheat grinding factory develop a water wheel on their own initiative to automatically process the wheat in order to increase the factory output and clear through their backlog. The MC praises such ingenuity and hints that such future native self-development without needing his instruction will help further his plans more quickly. Although it seems to me like an extreme stretch of reality for someone to invent such things without any previous exposure ever to similar technology.

The central point of his integration plan was to disband all tribes and to spread the people all uniformly amongst each other, and then teaching them the "national standard" language of the original first founding tribe. In the process, I assume most tribes lost their native languages and culture, and their original group identities. The MC mentions that in the early years there were some conflicts and discrimination caused by such language and tribal differences, but that overall social order seem to be improving with the improvement of education through a common language and the establishment of a police force. The author writes in some people's perspective that they were happy to work and cooperate for the benefit of having enough food, good shelter, and clothing.

Somehow this kind of social reorganization of splitting people up to break their bonds, erasing their culture, and giving them assigned work feels like how some real world communist dictatorship countries historically developed (e.g. Cambodia, North Korea). I thought it was somewhat ironic that a South Korean author was promoting such a system. And I think the MC's colonialist expansionism has parallels to how real world European colonialists reorganized the natives that they conquered, although in this fictional story most of the natives are happy to cooperate.

In the beginning of the second book, the MC pushes out his colonialist expansion by building big sailing ships and conquering Panama with great bloodshed in order to access the Pacific Ocean and trade with the western part of South America in order to procure llamas for labor. He trades peacefully with the South American natives. I guess whether he treats certain tribes with hostility or peace may depend on whether the land they live on is beneficial to his goal of saving the human race, but somehow seems like hypocrisy.

Here too is a problem that the author doesn't give enough details about the geographical size of the new native American nation. It's not exactly clear where the borders are and where are the vilages. The MC simply states his goal of dominating the continent, but the author only ever states the Mississippi river and building ships to manage the villages along the river, mining the Appalachian mountains, taking over Panama, and trade with the Andes. But his population of 2 million and growing would probably not realistically cover too far of a distance, unless the author intended otherwise. Although he does mention that some of the tribes fleeing his subjugation remain outside his nation's borders, and the Aztec to the southwest as a potential source of conflict. However how the MC is able to manage such a distance place as Panama logistically and effectively remains a mystery to me.

immortality/eternal youth that came from an invention in the future