I Refuse to Become Scumbag in Tokyo - Chapter 728: Mother

She was originally the young miss of the Marquis Estate, but became a peasant girl due to a mixed-up at birth.

An accident gave Ye Han a magical ability to see through. Since then, his life has become rich and colorful. He has developed the strongest business empire, dominated the gambling world, and rejuvenated his medical skills. He has become a master of medicine and Taoism. The goddesses rushed towards him one after another. As a man, and a limited edition man, Ye Han was under a lot of pressure and had to go on an exploration with a few tomb robbers. However, a shocking secret from ancient times to the present gradually emerged. in front of him!

- Description from novelbuddy

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.

On Terra, everyone has a 58% chance to “Awaken” as a Traveler—a chosen few who can access mystical portals called Flumes, allowing them to travel to Genovia, a world filled with unimaginable power, chaos, and danger. But not everyone gets to be a hero.Born into a struggling family with nothing but ragged clothes and a bleak future, Aoni Thurston, a total nobody with a humiliating One-Star Potential and G- stats across the board, knows his only chance at survival hinges on unlocking his hidden ability, something which all Traveler’s are gifted “Attributes.”But Aoni’s Attribute, “Progression,” holds a secret—a power to bend the rules of his ruthless reality. Each small victory, every step forward, earns him mysterious Progress Points, enabling him to transform his weaknesses into strength. Surviving the unforgiving snows of his desolate Territory, he faces isolation, despair, and near-death, all while unraveling the potential of his Attribute.In a world where power is everything, can Aoni claw his way from obscurity to greatness, or will the system grind him into dust? His future is uncertain, but one thing is clear—everything in his world can change through his Attribute: Progression.