SorryImJustDiamond

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!!!

Donation link: https://ko-fi.com/sorryimjustdiamond

PS. Cover not mine, I just found it on google. If you are the owner and want me to take it down, then you can reach me in the comment section.

Reincarnated as an Imperial Prince

Britannia Empire. Location: Unknown.

"Where are you taking me?" Diana demanded an answer as she couldn't see anything due to the black cloth covering her face, barring her vision.

She's in a moving vehicle, her hands tied. The people sitting next to either side of her simply ignored her.

"I'm the Queen of the Britannia Empire. What you are doing to me is treason punishable by death!"

"Your Majesty, I think you should probably stop mentioning that you are still the Queen of the Britannia Empire," Stanley spoke, sitting in front of the vehicle.

"Stanley..!" Diana growled, her beautiful face starting to contort angrily. "How could you do this?!"

Takeover