Video spoilers history, starting with the blitzkrieg on Poland

The sky curtain also continued to tell stories about the plains.

[First, Australia is located near the Tropic of Cancer and is affected by the subtropical high pressure. ]

[The entire Australian continent is experiencing hot weather with high temperatures and little rainfall.]

[To focus on the central plains, we must first start from Western Australia. ]

【The terrain in western Australia is very flat, and air currents blowing from other places can reach the central plains without any obstruction.】

【But Western Australia is famous for the Australian cold current. 】

[This cold front's airflow penetrates deep into the Australian interior, only making the central plains even drier.]

[From the northwest, the moisture brought by the northwest monsoon can enter the interior of Australia, but because the central plains are too flat, there are no high mountains to block it.]

[This northwest monsoon, which carries warm and humid air currents, blows over the plains, but it is difficult for it to stay and form large-scale rainfall.]

To make matters worse.

[The ocean east of Australia is the Australian Current. ]

[Originally, the Australian warm current can bring a lot of precipitation. ]

【But in eastern Australia, there is the famous Great Dividing Range which is 3000 kilometers long. 】

[As the name suggests, the Great Dividing Range directly intercepts the warm and humid air of the Australian warm current. ]

【Prevent it from reaching the central plains. 】

【It is originally under the control of the subtropical high pressure. 】

[The cold current from the west is blowing, and the warm current from the east cannot get in. 】

[The combination of various factors has caused the entire central plains of Australia to become extremely dry, turning it into a huge, vast desert.]

[It is impossible to grow crops.]

[Nature is not suitable for human habitation. ]

[Ranked second is Russia's West Siberian Plain, which is roughly located east of the Ural Mountains and west of the Yenisei River.]

[The total area reaches 260 million square kilometers, making it the largest plain in Asia. ]

[Although the plain is large, the population is small. ]

【In such a large area, the total population is only 1000 million. 】

[And most of them live in the southern part of the plains. ]

[There are almost no people in the central and northern parts of the plains.]

[In contrast, the East European Plain, which is only separated from the West Siberian Plain by a mountain, is home to 1.5 million people, although it is also at a high latitude.]

[And the Ural Mountains also block the water vapor from the Atlantic Ocean and prevent it from entering the West Siberian Plain.]

【Only cold air currents from the Arctic Ocean affect this area. 】

[In fact, the West Siberian plains are different from the central Australian plains. ]

【The West Siberian Plain is densely covered with vegetation and rich in natural resources, which is very attractive. 】

[The most critical problem is that the latitude is too high and it is located in the heart of the continent. ]

[It’s really too cold.]

[The lowest temperature here can exceed minus 50 degrees! ]

[Almost the entire plain is covered with permafrost.]

【It is totally unsuitable for growing crops.】

【Not only is it not suitable for agriculture. 】

[Including industry is not very suitable. 】

[Even hard steel will become extremely fragile when blown by the Siberian cold wind.]

【Transportation, construction, and industry have all been greatly affected.】

[In addition, the swamps that cover the entire plain further restrict human travel and transportation. ]

[If it was just permafrost and a cold climate, for the sake of resources, during the Soviet era, they could have built a lot of infrastructure and gritted their teeth to resist.]

[But the key is that in summer, the temperature here can even reach 30 degrees. ]

[The surface of the frozen soil will melt and dilute, turning into a muddy and difficult swamp-like road.]

[The roads that have been repaired will be destroyed again.]

[No one can stand repairing it once a year.]…

Outside the sky.

Tang Dynasty.

Li Shimin saw on the map that such a large plain was not far from the Tang Dynasty.

But it was a complete mess, and I couldn't help but laugh and say:

"The Mobei area of ​​our Great Tang and the areas beyond it are already the worst of the worst, or even barren."

“I didn’t expect there would be a master.”

"In the desert, the permafrost is extremely rotten."

"Looking at the national map on the sky, a large area of ​​Russia in the future is a wasteland in Siberia."

"Could they be the legendary king of the world's rotten land?"

“This land is so rotten!”

“Even if we send troops to occupy it, we cannot maintain long-term rule.”

"If our Tang Dynasty needs to further expand its territory."

"I'm afraid I'd rather go south to those Southeast Asian countries and fight the jungle miasma than go to Siberia and suffer the cold wind."

And the sky also revealed the last vast plain that was not suitable for human survival.

And many netizens have already guessed it.

The answer is the Amazon.

[The Amazon Plain in northern South America covers an area of ​​560 million square kilometers, making it the largest plain in the world.]

[The entire plain is mainly covered by the Amazon River, the most abundant river in the world, and its tributaries. ]

[The Amazon has abundant hydrothermal resources and a flat terrain.]

[It stands to reason that this world's largest river floodplain should be very suitable for human habitation. ]

[But the problem is that hydrothermal resources are too abundant. ]

[The Amazon Plain is located near the equator and has a tropical rainforest climate with high temperatures and heavy rainfall all year round. The annual precipitation can even reach 2000 mm.]

[Under the hot and rainy environment, the entire plain has rivers running through forests, dense swamps, rampant mosquitoes, and numerous epidemics. ]

[Food is prone to mold and spoilage, and if you are wet all day, bacteria can easily multiply, making it easy to get infected with various infectious diseases.]

[If ordinary humans live in the plains, they will soon be infected with various local diseases. 】

[Although the Amazon has a flat terrain and high temperatures and rainfall, the environment is too complex and this land is also not suitable for agricultural production.]

[There is so much rainfall that the river may overflow at any time.]

[It makes farming impossible.]

[This means that the population of the Amazon Plain will not be too large. ]

[In addition to the climate and environment, the overly dense vegetation cover and the complex river network make transportation in this plain very inconvenient. ]

[Even if an industrial base is built, it will still be very difficult to transport raw materials and process products for sale.]

[With this skill, no one would be willing to invest here. ]

[So this huge plain, which is more than half the size of China, has a population of only over 1000 million.]

The sky screen video ends here.

Barrages of comments also flew out.

"The Northeast Plain was not suitable for human habitation in ancient times, but with the improvement of development methods, the Great Northern Wilderness has become the northern granary."

"In ancient times, the various water, swamps, and forests in Jiangnan were not suitable for human habitation."

"But the bitter cold in Northeast China is not as severe as the Hudson Bay and Siberia in the video."

"It's like the plains of America, where the level of science and technology in ancient times could not be developed."

"Yes, the central plains of the United States run through the north and south, and the cold waves are very severe, which is not suitable for stable agriculture."

"The best land for ancient agricultural civilization is in our country."

"Before the invention of water pumps, several black soil areas in Northeast China, Ukraine, and the central United States were extremely bad lands and were not suitable for human survival at all."

"Siberia is not suitable for agriculture? Isn't it suitable for growing potatoes?" (End of this chapter)