Tensei Shitara Slime Datta Ken (WN) - Chapter 383

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.

The earth has entered the era of aura recovery, and human beings have started their supernatural awakening!

Jiangnan start awakening the strongest to spread the system, potion? Detoxification of small soybeans? Lucky cherries? In short supply!

The world’s top gods, richest men, beautiful school girls, popular anchors, goddess of high cold, and peak powers have all come to buy.

Jiang Nan: “I’m not interested in making billions of dollars! I just want to pit… Uh, my wish is for world peace!”

- Description from MTL

Transmigrating to a lawless person and then directly upgrading to a little brat’s stepmother. Xiao Ting said, “Crap, there’s no need to even give birth to a child. God, I love you so much …”

- Description from Novelupdates

Song Haotian, an old man with dementia, was deserted by his children. This kind of news was common on the Internet. However, such an insignificant event actually led to a series of events.

Song Haotian’s adopted daughter made false claims about him in order to be selected for a talent show. The netizens cyberbullied the old man in order to protect their idol. Just when the netizens thought this case would end satisfactorily with the adopted daughter winning, an unexpected scene played out.

The head of East Asian Chamber of Commerce, the elder of an ancient martial arts clan, the beautiful CEO of the world’s most powerful security company, the head of the nation-renowned Chinese Medicine Association, and many other families and factions were involved in the case due to the false claim.

Later, the netizens finally found out the true identity of Song Haotian and how powerful he was. However, it was too late now.