The Return Of the Invincible Heiress - Chapter 322

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.

Qin An was a former senior grim reaper who retired after serving the underworld for thousands of years. Because of his outstanding service and had enough merits, he was given a chance to become a human and unexpectedly transmigrated to the Interstellar era. But, how can he live his retirement days when has no money and everything? So, Qin An entered a reality talent show for idols and became an existence that everyone admires to.

This time, the soul-transferred Naruto no longer worries about his lineage and ignores those strange looks, binding himself to the 'Take It Easy System'.[Option 1: Pursue Sakura. Reward: S-Rank Ninjutsu.][Option 2: Pursue Hinata, avoid ten years of detours. Reward: Kyubi’s approval (you can use Kyubi’s Chakra at will)]Is that even a question?Naruto decisively chooses Hinata.Naruto fishes by the river, and Mizuki suddenly appears.Mizuki: “Naruto, do you want to become stronger?”[Option 1: Refuse Mizuki’s invitation and tell him to get lost. Reward: Full level Fishing Mastery.] [Option 2: Accept Mizuki’s invitation and steal the Scroll of Seals. Reward: Impure World Reincarnation (Incomplete)]Naruto: Is there even a choice?Sandaime Hokage: “Where tree leaves dance... one shall find flames... the fire's shadow will illuminate the village... and once again tree leaves shall bud anew.”Naruto: “Smooth!”

“Did you think healing me would make me love you more?” He scoffed grabbing my hair as he pulled me towards the door.“You're hurting me, Xavier,” I cried beating against him weakly. There was not much I could do.“If I ever see you an inch close to me,” He threw me against the wall “I'll damn the consequences and kill you,”.***My mate and I were destined to hate each other, only an act of true love or selflessness from the stronger mate could set our destines on the right path but for seven years, I had to put up with my mate's abuse and his supposed love of his life until one day I decided to leave.I left, determined to stay hidden from him forever... but I found out I was pregnant few weeks later.