Video spoilers history, starting with the blitzkrieg on Poland

Amidst many comments of doubt and lack of confidence, the video continued to play.

【Rivers play an extremely important role in the development of a country. 】

[Early human civilization settlements were almost all built along rivers.]

【From the ancient Egyptian Nile civilization, the Mesopotamian civilization to the Indus civilization in the West. 】

【Then go to the ancient times of China. 】

[Basically every civilization worth mentioning has a mother river that is well-known around the world and upon which it depends for survival.]

【As the most important source of fresh water for humans, rivers not only provide drinking water for human life. 】

【It also has extremely important economic, political and other uses. 】

[Drinking irrigation, shipping, agriculture, industrial production, etc. all require a large amount of water. 】

[It can even be said that rivers determine the development potential of a region or a country to a large extent.]

【There are many famous rivers in the world. 】

[For example, the Nile River is the longest river in the world, with a length of more than 6600 kilometers, and gave birth to the prosperous ancient Egyptian civilization. ]

[The Amazon River is not only slightly longer than the Yangtze River. ]

[The annual runoff has reached a terrifying 70000 billion cubic meters! ]

[It seems that the Amazon River is not only longer than the Yangtze River, but also has a flow rate several times that of the Yangtze River. Its overall strength should be higher than that of the Yangtze River.]

【But in reality, the Amazon River is nothing compared to the Yangtze River. 】

[The Amazon River is located near the equator in South America and has a tropical rainforest climate, with an annual precipitation of more than 2000 mm and an average annual temperature of nearly 27°C, which is generally hot and humid. ]

[The extreme tropical rainforest climate makes this place completely unsuitable for human survival. ]

[The Amazon River Basin is so large, but its population is less than 2000 million, many of whom are still primitive tribes.]

[The Amazon River is long and has a large flow, with a drainage area of ​​nearly 700 million square kilometers, but its irrigation value is extremely low. ]

[It is not suitable for agricultural production and has a small population, which naturally further reduces the freight volume. ]

[The value of shipping along the entire Amazon River is pitifully low.]

[Although the Nile River is long enough, the population in its basin is as high as 400 million, which is comparable to the population of the Yangtze River Basin.]

[But the annual runoff is only 810 billion cubic meters.]

[The serious shortage of water flow has severely restricted the further development of the Nile River Basin. ]

【Don’t mention that the most important country in the Nile River Basin is Egypt. 】

【The next countries are Sudan, South Sudan, Ethiopia and others. 】

[The economies of these countries are generally relatively backward, which naturally makes the cargo volume and shipping value of the Nile River completely incomparable to that of the Yangtze River. ]

【Along the Yangtze River, there are large areas suitable for population concentration and agricultural production, such as the Sichuan Basin and the middle and lower reaches of the Yangtze River Plain.】

【It gave birth to many megacities such as Chengdu, Chongqing, Wuhan, Nanchang, Nanjing, Changsha, and Shanghai. 】

[It is far ahead of the Nile River and the Amazon River in terms of agricultural planting and population carrying capacity. ]

[The freight transport capacity of the Yangtze River Basin is even more terrifying. The entire Yangtze River system is well connected, with many population and industrial centers along the way.]

[Coupled with the renovation and addition of the canal over the years, the cargo volume of the Yangtze River mainstream reached 2023 billion tons in 38.8, ranking first in the world, far ahead. ]

[The second place is the Pearl River Basin, with a cargo volume of 15 billion tons. ]

【The third place is the Beijing-Hangzhou Grand Canal, with a cargo volume of 8 million tons, which means that the top three rivers in the world in terms of cargo volume are all in my country.】

[The population carrying capacity and freight transportation in the Yangtze River Basin are both far ahead.]

Tianmu first introduced two famous rivers, the Nile River and the Amazon River, which are longer than the Yangtze River.

But it was also pointed out directly that these two rivers cannot be compared with the Yangtze River.

Although their length is longer than that of the Yangtze River.

The flow of the Amazon River is even more astonishing.

But its overall value is far inferior to that of the Yangtze River.

And in the Sui Dynasty.

Yang Guang saw that the Grand Canal ranked third, and even third in the world in later generations!

I couldn't help but cheer!
"I said the Grand Canal was well built!"

“It must be fixed!”

"It has been more than a thousand years, and future generations still rely on my Grand Canal!"

“And it has top-tier cargo volumes worldwide!”

"How many years has this benefited China?"

"Where are those who criticized me before?" Yang Guang suddenly roared and looked at the ministers around him with ferocious eyes.

"Speak! Kuroko, speak!"

The sky continues.

[Of course, some friends also want to say it. 】

[The Nile River is mainly in Egypt, and the Amazon River is mainly in Brazil, both of which are underdeveloped countries in Africa and South America.] [Can we compare the rivers owned by the powerful, large, and developed countries in the world with the Yangtze River?]

【Can. 】

[Let’s first take a look at the largest river in the United States, the Mississippi River. ]

[The Mississippi River Basin covers an area of ​​322 million square kilometers, almost half of the continental United States.]

[And the Mississippi River's water flow is also abundant, reaching 6000 billion cubic meters. ]

[The Mississippi River gave birth to the Great Plains in the central United States. ]

【The Mississippi River has played an indispensable role in the United States' agricultural production capacity ranking first in the world. 】

[At the same time, the Mississippi River also has a large cargo volume. With the canal connecting to the Great Lakes, and then from the Great Lakes to the Atlantic Ocean via the St. Lawrence River, the shipping capacity of the Mississippi River has been further enhanced.]

[It can be seen that the United States is worthy of being a world-class superpower, and the Mississippi River owned by the United States is indeed worthy of being a world-class top river. ]

[Whether it is length, basin area, water network, development level and runoff volume, etc. ]

[Almost all of them are impeccable, comparable to the Yangtze River. ]

[But why is it that the annual cargo volume of the Mississippi River in the United States, which has the most developed economy and the highest GDP in the world, is only 5 million tons? ]

【It’s not even a fraction of the length of the Yangtze River?】

[The main reason is that the navigability of the Mississippi River is still far behind that of the Yangtze River.]

【The course of the Mississippi River is winding.】

[The water flow is also relatively small. ]

[Generally, it can only handle cargo ships of 2000 tons. 】

[The Yangtze River Basin, especially the lower reaches, has abundant water flow, a wide river channel and artificial improvements, so that 10,000-ton ships can now go directly to Chongqing.]

[In addition, the main estuary of the Mississippi River is the Gulf of Mexico. ]

【It is neither the Pacific Ocean nor the Atlantic Ocean. 】

【The location of the estuary affects the value of shipping. 】

[The Great Lakes estuaries in the north are even more winding.]

[Moreover, the Great Lakes have become a rust belt. Premature industrial development has caused heavy metal industrial sludge from a hundred years ago to accumulate at the bottom of the Great Lakes.]

【The Yangtze River's estuary leads directly to the Pacific Ocean. 】

[It is very convenient whether you are going to the United States, Europe, Japan, South Korea, or Southeast Asia. ]

[The most important reason is not the location of the estuary or the navigability of the river. ]

【Because no river is truly perfect. 】

[Even the Yangtze River has its own flaws and needs long-term transformation.]

[But there is one problem that cannot be solved, that is, the Mississippi River runs from north to south. ]

[The overall shipping value of north-south rivers is not as good as that of east-west rivers.]

[Rivers running north-south, because they span multiple latitudes, are often greatly affected by seasonal changes.]

[The amount of water varies greatly in different seasons.]

[Rivers in high-latitude areas may freeze over, further affecting the sustainability of shipping.]

[East-west rivers are generally at the same latitude, so they either have no freezing period or a relatively short freezing period.]

[Comparing the Yangtze River and the Mississippi River, you can see that the Yangtze River is navigable throughout the entire course and all year round. ]

[In the northern part of the Mississippi River, the water often dries up or even freezes during the off-season.]

[This further affects the shipping value of the Mississippi River in a long-term and permanent manner.]

……

The sky curtain raises a truly critical core factor, which is the direction of the river.

Sui Dynasty.

Emperor Yang Guang of the Sui Dynasty, who was very concerned about rivers, fell into deep thought as he looked at the contents and maps on the sky curtain.

Then Yang Guang had to admit it.

"Although my Great Sui Dynasty really needs a north-south river."

"To connect the north and the south, this is also the original intention of my building the Grand Canal."

"But we have to admit that whether it is the Yellow River or the Yangtze River, it is better to run east-west."

“Of course, it would be even better if there was a river running north-south in addition to the east-west direction.”

"My descendants will surely be very grateful to me when they see the Grand Canal, right?"

And in the Southern Song Dynasty.

Song Gaozong Zhao Gou, from a military perspective, said with relief:

"Fortunately, there is no north-south river. Otherwise, how could I defend half of the Song Dynasty?" (End of this chapter)