The Fourth World War took place in 2333, and the war ended in just one day.
Among them, there are 49 developed countries and more than 70 developing countries in the world. There are still more than a dozen underdeveloped countries that are trapped in this war, but the United Nations, which has a sound system, has no way to deal with this war.
It is impossible to know which country launched the intercontinental nuclear missile first, and then the country that was damaged by nuclear weapons began to fight back against countries they felt threatened.
In this way, more and more countries were injured by nuclear weapons, and they were bombarding other countries one after another.
That was the first nuclear war between mankind. Except for a few neutral foreign countries, almost 90% of countries either possess new nuclear weapons or are developing new nuclear weapons.
Almost even developing countries have several nuclear bombs. This day is called the Fourth World War or the First World Nuclear War.
One day later, the world’s population dropped sharply by 70%, and even the North and South Poles were spared from nuclear bombs.
Nuclear radiation is very serious, and news from all over the country is spreading that the earth is no longer suitable for human habitation.
The entire earth is full of nuclear radiation, and when the more serious it is not known which country has launched biochemical missiles.
After these biochemical missiles touch the ground, they begin to release heavy smoke, and each missile can pollute about five kilometers of air on average.
It is transmitted by the air, and can even float and shake to ten kilometers or even further along with time and wind.
These biochemical gases enter the body through the olfactory organs of humans and animals, and then travel to various parts of the body through metabolism.
This gas affects the human brain and nerve centers, and the affected human thinking begins to become slow and blocked.
Only instinctively maintain the most basic thinking of eating, drinking, defecation and urination, and inherit it from generation to generation through DNA to the next generation.
In the following years, fewer and fewer humans survived, and their IQ gradually declined until they could not think and only know how to survive.
In the decade after World War IV, mankind completely disappeared.
The only surviving humans no longer look like humans, and they look more like savages who eat raw meat and drink blood.