Dragon-Marked War God - Chapter 3034

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.

“You are chosen to be reincarnated in this era.”

A plain high school school boy involved in a truck-kun incident and met a goddess upon waking up.

He was given abilities that he wishes and got reborn as a son of an aristocrat family. To found out that his parents were actually the strongest couple in the continent.

But that's not the thing that he was shocked for. He discovered that both his biological parents were actually women?!

With his cheat skills, he will live his life as much as he pleased and build a nation before he realized it.

Keeley, a simple plain Jane, hits the jackpot. [No, she did not win the lottery!] At least that's what she thinks when she marries the most eligible bachelor in New York City: Aaron, a wealthy cold-hearted heartthrob and Tycoon.

The immortal cultivator was reborn in the city and became the defeated rich second-generation college student Zhang Yifeng, starting a counterattack from then on.

Step on high, rich and handsome, punch all kinds of masters.

Relying on the secret technique of comprehension, he is watching the world and sweeping all opponents in the world.

“In front of me, no one dares to be arrogant, because people who dare to be arrogant to me will never have a future.”

“In front of me, even the high-ranking queen should lower her head. Otherwise, there will never be a crown on her head.”

- Description from MTL