First Stygian Diviner:Apocalypse - Chapter 287 From Another Region

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.

After playing a variation of the poker game, Shadow’s Hand, Damien Pearce unexpectedly awakened in an unfamiliar world.Stripped of all kinds of information in the world he was thrown into, Damien now had to navigate it through wits and guts.Amidst his search for information, he discovered that he seemed to be a part of the world as a Transcendent Investigator, otherwise known as TI.The TI seemed fearful and revered among the people in this world. They were responsible for catching Transcendent(s) who misused their power.But was that the reason for his transfer?“Do I or do I not belong in this world?” Damien questioned his presence constantly.

Born of a great family, world shaking genius.

The man who had shaken the world.

The story of the Swordmeister.

“I don't share my possessions, Mr. Campbell. Your wife stole from me and now I want something back. You should know I always collect what I'm owed,”When Liam Campbell's wife steals from his wealthy female boss and disappears, he's left to face the music. But his boss, Lady Isabella Ashworth, has other plans for repayment—plans that involve keeping the handsome man for herself.Everyone thinks they know the score: young guy becomes a rich woman's plaything. What they don't know is that Liam's got more weapons than just his looks. Behind his perfect face lies a ruthless mind that turned him from a nobody into a rising star.Now, trapped in Isabella's world of luxury and power, he'll play her game—but by his rules. His main goal is to dominate her as much as she wants to dominate him.But who's really taming who?