MTL - Limitless Sword God - Chapter 6 Promise sword

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.

David traveled to America and became an inspector for the most powerful law enforcement agency, the IRS.On December 3, 2021, America Congress passed a piece of legislation.It stipulated that from now on, any criminal activity, whether smuggling, robbery, fraud, etc., had to pay full taxes to the IRS.Since then, David had become the nightmare of all criminals in America.Until one day, his blade reached towards the heads of Freemasonry and the Federal Reserve!

An ordinary student, a wretched peeper, a cowardly teenager with a kind heart. In a terrorist attack, he inherited the knowledge of countless elites, embarked on a path of God Jagged Tu…

He is an artist!

He is a mathematician!

He is a psychology Doctor!

He is a master of fighting!

In fact, he is a man

Taken off raw site:

A wretched, dirty young man is working during the summer when he was caught up in a mysterious explosion. After that explosion, the young man is then left with the memories and knowledge of dozens of the world’s experts.

He has changed, his heart has become cold, iron-blooded. He became a killing machine, his mind turned mechanical, calculative. Everything goes according to his plans and calculations!

In this magical, slaughterous world, a door is opened for him…

- Description from Novelupdates

After her rebirth, she stared at her drop-dead gorgeous husband and suspected that she must have struck her head hard at the door for demanding a divorce time and time again!

In her previous life, she was blinded and murdered by her blood relatives. Now that she was reborn, she vowed to hold on to this thick thigh of her president husband, ravage her enemies, tear down that white lotus and regain her happiness.

- Description from Novelupdates