I Wasn't Born Lucky - Chapter 51

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.

In the rebirth, in order to prevent the tragedy of the previous life from happening, Bai Yu decided to rush to the [Tower of God] at any cost, and face everything together with his sister!

However, Bai Yu, who was bound by the system, mutated his bloodline, and transformed into a black-scaled python seems to be developing on a completely different path from his previous life…

- Description from novelbuddy

After Chu Zheng was inexplicably determined to have died, the only trouble she had was to spend money.

Since the binding of this system, her waist is not sour, her legs are not hurting, and the special ones are not breathing, and every day lives in the fear of having to spend money.

System: Miss Sister, don’t just open the invincible mode! (▼皿▼#)

System: We set a small goal, first spend a hundred million!

Chu Zheng: Say good and lose, how is this inexplicable man? Don’t stop me! I am going to conquer the world!

A male lord: (quickly renamed) my name is the world name.

#Sister, learn that you can really do whatever you want with enough money#

- Description from novelupdates

After living in a desolate land, where there wasn’t even a single blade of grass and hunger was an everyday reality, Min Sung finally returns to Earth: his home.