Way of Overlord - Chapter 507: Questioning the Kan

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.

After getting betrayed and killed by the only person she’d loved, Miss Shang wakes up in the body of the cowardly crown prince Shang Wuxin, who, due to her own circumstances, was actually a girl cross-dressing as a boy. After inheriting the crown prince’s memories, Shang Wuxin has three things on her agenda:

1. Clean up the house

2. Gather loyal followers and soldiers

3. Get the throne

- Description from Novelupdates

Claire Reed thought she married the man of her dreams, Evander Kensington, but she had no idea that their marriage was built on a lie; a family vow that trapped him by her side.His heart, however, belonged to another woman, his white lotus.No matter how hard Claire tried to win Evander’s love, he only grew colder, and his family treated her like she didn’t exist.When she lost their unborn child, Claire’s world shattered. She wanted to see Evander, but he didn't bother to check on her. Instead, he went to meet that white lotus.Unable to bear the betrayal, she decided to free Evander from this marriage, leaving behind a letter and divorce papers, claiming she now had someone else she loved!~~~~“You’re mine, and I’ll never let you go!” he declared, his voice dark with possessiveness.“But I don’t want you anymore! You can have Susan—I’m now in love with someone else!” Claire shot back, her words sharp and final.“You can't be with anyone. Do you even know how sleepless nights I've without you?” Evander's hold on her tightened. “I'll see how you become some else when I'll claim you,” he pronounced before crashing his lips on her.