Video spoilers history, starting with the blitzkrieg on Poland

The first thing that appeared on the sky was a world map.

Start telling at the same time.

[When it comes to plains, everyone generally thinks that plains are the most suitable place for human habitation. ]

【This is a fact that cannot be denied.】

[Like my country's North China Plain, the middle and lower reaches of the Yangtze River Plain, Europe's West European Plain, East European Plain, the United States' Mississippi River Plain, etc. ]

【They are all famous human gathering places in the world. 】

[Many of them have been the center of human civilization since ancient times, with extremely high population density and relatively high level of civilization. ]

[Take the three largest plains in my country as examples: the Northeast Plain, the North China Plain and the middle and lower reaches of the Yangtze River Plain. ]

[Although these three plains only cover an area of ​​91 square kilometers, they are equivalent to less than 10% of the total area of ​​my country's population territory.]

【But there are more than 7 million people living there. 】

[That is to say, more than 50% of our country’s population lives on this 10% of plain land. ]

【And the grain output of these three plains. 】

[It even reached 70% of the country. ]

【Can feed 10 billion people! 】

[Less than 10% of the land supports more than 50% of the population and produces more than 70% of the food. This is the charm of the plains. ]

[We can confirm that the most suitable place for human life, especially for large-scale gatherings, is indeed plains.]

[However, the Earth is so large that there are also some plains that are not suitable for human habitation. ]

[Although these plains are flat and large in area, they are not suitable for human habitation due to various factors.]

[It is still a large area of ​​uninhabited land. ]

[So what exactly caused these plains to become uninhabited areas? ]

[Where are these plains that are not suitable for human habitation? ]

Outside the sky.

When watching popular science videos about geography, ancient people also watched them patiently.

Especially those ancient people who were determined to expand their territory.

I even regarded this video as a potential guide to avoiding minefields.

Qin Dynasty.

Ying Zheng said jokingly:
"Haha, if one day, the sky curtain really has a more magical effect, it will allow me to be immortal or live another 500 years."

"Then my conquest will once again begin towards the whole world."

"Learning this section of the sky curtain can help us avoid places that are not suitable for human habitation in advance."

“Focus your limited energy on the most fertile areas of the world.”

Canopy.

[The first is the Hudson Bay Plain in Canada, North America. ]

[As you can see from the map, the Hudson Bay Plain surrounds the Hudson Bay that extends deep into the interior of Canada. It is a U-shaped coastal plain.]

【The total area reached 30 square kilometers. 】

[The problem with the Hudson Bay Plain is that its latitude is too high, and some areas are even very close to the Arctic Circle.]

[The average temperature of this plain is only minus 12 degrees Celsius throughout the year.]

[The lowest temperature even exceeded minus 50 degrees Celsius. ]

[The extremely cold environment has led to widespread distribution of permafrost and glaciers in the Hudson Bay, forming a unique tundra landform.

[Although there are indigenous people living here, it is really not suitable for large-scale human survival]

[The entire plain cannot even support slightly larger trees, let alone conventional agricultural crops.]

[Agriculture is not possible, so the population that this plain can support is very limited. ]

[Of course, the Hudson Bay Plain also has some advantages. After all, it surrounds the Hudson Bay, and the indigenous people here can make a living by fishing and hunting. ]

[The water quality in Hudson Bay is very good. In addition, there are many rivers flowing into it, so there are also a lot of fish species. ]

[However, the Hudson Bay has a long ice period, which means that the season for fishing is only a few months a year. ]

【As for fishing with icebreakers? 】

[The cost is too high! ]

[Agriculture is not doing well, and fishing is restricted by the ice period. ]

[In addition, the Hudson Bay is often covered with fog, which makes navigation inconvenient, so the population of the Hudson Bay Plain has always been small. ]

【Even in modern society.】

[The permanent population around Hudson Bay is basically only one or two thousand Inuit. ]

[Modern Canada is a developed country, but modern technology still cannot do anything to this plain, especially when compared with the Great Plains of the United States below.]

[The difference caused by latitude is even more obvious.] The first plain introduced by Tianmu was not mentioned in the previous Tianmu.

But the ancients looked at the location of the Hudson Bay Plain on the map.

I know that the main problem with this plain is that it is too far north.

It was freezing cold.

Even if the land is level it won't help.

However, while Zhu Di determined that the Hudson Bay Plain was useless, he also said:
"Isn't it that people in later generations often mention a term called global warming?"

"If global temperatures continue to rise in the future, perhaps this coastal plain will have a chance to develop, but that would not be a good thing for the whole world."

……

After the Hudson Bay Plain, the next thing to be introduced is the Tulan Plain.

[The Turan Plain is located in Central Asia, with a total area of ​​150 million square kilometers, which is a very large area. ]

[It faces the Caspian Sea to the west, and is surrounded by the Tianshan Mountains, the Pamir Plateau, the Kopet Mountains, and the Kazakh Hills in the east, south, and north. ]

【A lowland plain was formed.】

[The Turan Plain is located in the heart of the Eurasian continent and has a continental arid climate. It is very far away from the Arctic Ocean, the Indian Ocean, the Pacific Ocean, and the Atlantic Ocean in the east, south, west, and north.]

【Plus the surrounding mountains are blocking the way. 】

[It is difficult for water vapor from the ocean to reach the Turan Plain, and the average annual precipitation of the entire Turan Plain does not exceed 200 mm. ]

[The area has very little rainfall, and the summer is unusually hot.]

[The temperature difference between day and night is extremely large in winter and it is extremely cold. ]

【The only water that was left evaporated.】

[In addition, the entire Central Asian region is generally surrounded by deserts, which makes it difficult to carry the land around the Turan Plain. ]

[Although in ancient times, the Turan Plain was called the Land of the River, and was considered a relatively rich area in Central Asia. ]

[However, as time went on to the modern era, the Turan Plain, which was never suitable for growing crops, was naturally increasingly disliked by people.]

[The third one is the Central Australian Plains located in the central and eastern regions of Australia. ]

【The area has reached 175 million square kilometers. 】

[The Australian continent is the flattest and driest continent in the world. ]

[The central plains in the heart of Australia are extremely dry.]

[It is even drier than the Turan Plain mentioned earlier, located in the heart of the Eurasian continent.]

[The precipitation is not even on the same level. ]

[There are almost no permanent human residents on this vast plain of 175 million square kilometers.]

Why is this plain so dry?

[After all, looking at the map, Australia's central plains are not far from the ocean. ]

The sky curtain raised a question.

This was also the doubt of the ancients.

tomorrow.

Zhu Di expressed deep concern about why the central plains of Australia were suffering from severe water shortage and drought.

After all, Zhu Di has set his sights on the resource-rich land of Australia.

Zhu Di was eager to know more about Australia.

Before this, Zhu Di only knew that Australia had many plains and abundant resources.

It is a super unowned land that can make the Ming Dynasty great again and bless future generations of Chinese people.

It’s still very close to the Ming Dynasty.

There is an opportunity for large-scale colonization.

But what I didn’t expect was that there is such a large uninhabited area in the heart of Australia.

"That's a little weird."

Zhu Di muttered to himself in confusion.

"Look at the map. Australia is surrounded by oceans. It shouldn't be too dry, right?"

"If Australia is not suitable for human habitation, then the colonization of our Ming Dynasty may be affected."

Of course, Zhu Di knew that Tianmu would not speak nonsense.

So he looked at the sky more seriously and curiously.

I want to know why Australia is so dry.

The central plains in particular are said to be drier than the previous Turan plains. (End of this chapter)