My Hair Can Create a Demon Country - Chapter 415 - 401: Brilliant Battle of Wits, Turnabout Judgment

Wu Yuan was reborn to the eighth or eighth year when the carpenter had just graduated from school.

The snobby wife who had only been with her for three months in her previous life was about to marry.

It is impossible for Wu Yuanduan to jump into the same fire pit twice.

It is impossible for him to take this hard-won chance of rebirth to cover that cold heart that does not belong to him.

With that skill, he could have picked a better one.

The beautiful daughter of the branch secretary’s family is not bad.

Although his family is bare.

Although he is alone.

But he has more than 30 years of experience and a carpenter’s skills.

So Wu Yuan’s rebirth began as a carpenter.

- Description from novelbuddy

A scientific genius named Thomas Harrier was transmigrated to an imperial prince body after a car accident that took his life. He found out that he is in a world similar to our own with a timeline akin to early twentieth century. The body that he is occupying was the imperial prince of a failing empire who suddenly rose to power after a successful assassination attempt of his father. Unaware that the attack is just the beginning of what is to come. He faces many challenges throughout. Will Thomas Harrier be able to live his second life in peace while running an empire and getting it back to its former glory? Or will he succumb into a conspiracy lurking within the country's borders?

Expect some:

Cold war era techs.

Super battleship with advanced electronics, propulsion, and fire control systems?
Helicopters?
Missiles?
Modern medicines and equipment?
AC-130?
A nuke?
Challenger or Abrams or Leopard?
F-4 Phantom or MIG-21?
Colored TV's.

Everything!!!

PS. Cover not mine, I just found it on google.

Have you ever thought a monster that has a job of a summoner and a tamer

what should it call itself Monster Summoner? Monster Tamer? but he itself was a monster too

Watch as our mc travels the world as an reincarnated human who turn into a monster

A world where dragons serve as mayors, elves work in sales, and orcs brew coffee.In a city full of enhanced humans and wandering wizards, I became a young girl with psychic powers.“To do something so terrible to a child… These people are despicable.”“Human experimentation related to psychic powers is an international crime, punishable by at least the death penalty. This is absolutely unacceptable.”“Don’t worry anymore. From now on, you’ve got nothing to fear. We’ll take care of everything for you, little sister!”It seems the protagonists have misunderstood something.