MTL - Pokemon Black Fantasy - Chapter 854 : The biggest enemy of the villain organization is its own mouth

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.

Fang Heng was transmigrated to a parallel world and his soul was forced into the body of a man who had just committed suicide.Huh? What? Every human here was being forced to join a game? Those who refused would be killed?Wait? This suicide dude was a pro gamer?He had the highest S-rank talent sill, the Zombie Clone?Damn! The S-rank skill evolved! My zombie clones could auto hunt![Your zombie army has crafted Wooden Axe x720 when you were offline. You have received 1921 experience points for the Basic Crafting skill.][Your zombie army has chopped down 27,821 trees and gathered 128,973 pieces of wood while you were offline. You have received 2,171,921 experience points for the Basic Wood Chopping skill.]Just as the rest of the players were struggling to survive in the zombie apocalyptic game, Fang Heng's zombie clones were starting to clear every resource out of the forest.Hm... What an interesting game!

Originally born from a wealthy family, she ends up leading a vagrant life for fifteen years. However, when she is eventually found by her family, she falls into another devious plot and eventually dies tragically.

Fifteen years after her rebirth, ravenously raging for revenge, she tears down the hypocritical mask of the foster daughter who had taken her place, and reduces her greedy stepmother and stepsister back to their original sorry states.

To the jerk’s profession of his deep love for her, she only has one thing to say, “Get the hell out of my life. The love you speak of humiliates love!”

Regardless of the appearances of you monsters, I’ll take in it my stride with my capability, building a business dynasty of my own, sitting in the depths of my riches, bathing in the glistening limelight of the world.

A certain rich empire’s CEO: “Don’t mind me. I’m just leaving my mark here to declaring my possession rights; I’ll wait patiently for you to grow up!” The queen’s mighty return with commercial warfare fully within her grasp, she navigates the power struggles with skill and verve. When it comes to scheming conspiracies, all she has to say is, “Who are you again? Don’t even bother!”

- Description from Novelupdates

Before Li Daniu had time to be excited about being a prince who was about to ascend the throne, he learned that his country was about to be submerged by sea water.

“Can I wear it back?”

- Description from novelbuddy