MTL - The Great Merchant in the Cataclysm - Chapter 86 Solving cause and effect

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.

「Shimizu-san, you dyed your hair black.」「Ah, yes.」「Why did you dye it all of a sudden?」「Because…yesterday…」Shimizu-san, who sat next to me and had dyed her hair from blonde to black gradually lowered her voice, slightly blushed, and laid her face down on the desk.

Dark Girl X Cold Ruthless CEO Dad: A Story of RedemptionHuo Ning accidentally transmigrates into a female-oriented novel, becoming the pitiful daughter of the story’s antagonist.Before her arrival, this poor little girl was not only ab*sed by her birth mother but also treated as a plaything by her mother’s boyfriend, ultimately dying on a snowy night.The antagonist in the book is no pushover either. Used as a plot device by the original author, he’s solely focused on breaking up the main couple, ultimately meeting an accidental death.Huo Ning can’t stand by and watch. She not only latches onto the antagonist for protection but also helps him escape the protagonist’s plot armor, even personally sending their enemies to prison.Relying on her own abilities, she gradually changes the antagonist’s storyline while healing the original character’s trauma.Just when she thinks things are moving towards a brighter future, she unexpectedly finds herself in trouble…

On Blue Sea Star, there is an extraordinary group of people who control all kinds of incredible power through armed cards. They are called Star Card Masters.

Su Yuan came across, and he also carried a system that can strengthen his own star card.

Transformation Realm Enlightenment Soul Card Complete Awakening = Top Qualification Soul Card [Phoenix of the Blue Sky]

Consummation-level popular walking step: avoid certain long-range attacks!

Perfect level Cang Yan Strike: double Cang Yan Strike!

Consummation-level metamagnetic heavy pressure: heavy pressure field!

Consummation level air cut: break the boundary line!

Perfect rigid flame finger + perfect hardened iron coat = golden hand!

…

Su Yuan started from strengthening the initial soul-initiating card, step by step to the ultimate realm of Star Card Master!

- Description from novelbuddy