MTL - Survive in the Wilderness! The Actor King Sits in My Arms and Weeps - Chapter 299 No powder in front of the country

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.

Five of the world's wealthiest tycoons descended upon a poverty-stricken district simultaneously, astonishingly just to visit a 20-year-old young man. This young man was their master fifty years ago. Initially, these magnates only acquired some rudimentary knowledge from William Johnson, but that was enough to make them leaders in their respective fields. However, they were stunned by William's ageless visage when they saw him again, as they were unaware that William Johnson had lived for a billion years. He not only established different religions all over the world, but even Alexander the Great was once his student. Yet, after dispersing the tycoons fifty years ago, he chose a long slumber. But now, William Johnson has awakened...

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