Ihoujin, Dungeon ni Moguru - Chapter 067: The Trapped Adventurer IV

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.

I have been dead for a long time, but I am still alive, well... at least part of me is alive.Honestly, I don't really like the nickname those Tomb Raiders gave me, but I am someone willing to embrace new things.So yes, I am the zongzi that the Tomb Raiders dread, someone who considers themselves just suffering from a strange illness, hoping to recover soon.I have contracted a strange illness named 'longevity', accompanied by symptoms such as memory loss.PS. I'm trapped in the tomb and can't get out. Can someone take me out? Waiting online, pretty urgent.

Caden Ryder.Having both the status of a Transmigrator and a regressor.Once a human from Earth and a ruthless domineering general of the Purple Continent.His journey through the mystical world was rough and filled with betrayals.Following the death of Emperor Rozen Riverrun and the rise of Emperor Zeraith Riverrun.Both eras brought about the rise of the Redmen Race.And the death of the Purplemen Race, in the end....After years of fighting, after years of defending the Purple Continent.It was all for nothing. But little did he know that his execution was the beginning of his journey.[Regression Alert!]Regressing back to the time when Kyle Freeman transmigrated into the body of Caden Ryder.Now amped with the knowledge of two past lives, with his determination to grow stronger.With the zeal to live the mundane and quiet luxurious life he has always dreamed of.Caden must walk the path of domination, the path of conquerors.Armed with a Primordial System. Armed with three SSS-Ranked Ultimate Skills.If he must conquer the Red Continent to live his mundane, quiet, and luxurious life.Then so be it, he shall conquer the Red Continent.With the knowledge of his past lives, walking on a path of mysteries and adventures.If there's no way. he will create a way

A regular senior high school student accidentally obtained a Supernatural Ability System from three thousand years in the future. Lin Tian could exchange for all kinds of superpowers within the Supernatural Ability System. Exams? I have a photographic memory! You’re amazing? I transform into a Saiyan! An awesome life doesn’t need explanations!