In Timbuktu, one horse can be exchanged for 10 black slaves. One sack of salt can also be exchanged for 10 black slaves. However, the price of salt and gold are almost the same, and it is not cost-effective to exchange them for black slaves. And the horses, Marin is not willing to exchange them for them. Because, transporting horses from Persia was too cumbersome and time-consuming. If you have that time, you might as well ship it to the American colonies.

Ever since he had the means to recruit Sauron warriors to dominate the jungles of North America, Marin didn't care much about the threat of the Indians. Previously, Marin was also afraid that the Indians would get horses and develop the terrible Indian cavalry.

However, in front of the fierce Sauron barbarians, the cavalry of the Indians was simply weak!

You know, those Sauron people grew up in the dangerous mountains and old forests of the northeast. Siberian tigers and bears are very common, hunting wolves or something, but it is not uncommon. Therefore, the people of Sauron, who can grow up in the deep mountains and old forests of the northeast, are very brave and have excellent archery skills. Coupled with the auxiliary bonus of the horses, the abuse of the Indians was simply easy and enjoyable.

Therefore, Marin will not have to worry about the Indians developing cavalry or anything in the future. It's a big deal, send Sauron's cavalry to kill them all. Therefore, cattle and horses brought from Persia in the future can be safely transported to North America for local development.

At that time, each family in the North American colonies could raise a large number of horses, which could not only cultivate the land, but also facilitate transportation.

As for buying black slaves from the Songhai Empire, in addition to salt and horses, which could be exchanged for black slaves, iron weapons (mainly cold weapons such as swords and iron arrowheads), copper, glassware, sugar, and cloth were also very popular and expensive. After all, the Songhai Empire looks strong, but in fact, the technology is extremely backward, and it does not even have basic metallurgical capabilities, and copper and iron need to be imported. And transporting goods from North Africa to Timbuktu by camel caravans is very dangerous. It's a nail, and it can be sold for a sky-high price in Timbuktu.

Therefore, Marin is not worried about not being able to exchange for cheap black slaves. It just so happened that Marin was worried that Cuba's sugar production would not be sold after the expansion of sugar production. It's still no problem to exchange black slaves with the Songhai Empire.

Moreover, Marin also figured it out. He had been a little afraid that the descendants of blacks would plague the American colonies, just as the old and beautiful blacks of later generations were.

However, in the whole of America, what Marin really values is actually only the North American colonies, that is, the land of the later generations of Lao Mei, which is a good place to achieve Wang Tu's hegemony. developed, stronger than Europe combined.

As long as black slaves were not introduced in the core areas of the North American colonies, it didn't matter elsewhere. Just like the tropical Americas, cane sugar is expensive now, it's a valuable place. But when there are more areas where sugar is grown, the supply of products far exceeds demand, and the tropics are not worth much.

So, Marlin didn't care too much about the number of blacks in the tropics. Even if the tropical regions of the Americas are "blackened", it is not a big deal. As long as the fundamentals of North America are held, it will be enough.

Moreover, after the rise of the wave of independence in later generations, the predominantly black country was easier to control. Just like later generations, European and American countries easily played African countries into applause. There is no more ridiculous country than in East Africa. The people of the country are dying of starvation, but they are unwilling to hunt the millions of wildebeests, zebras and antelopes in the East African savannah...... This kind of brain circuit, should they be called stupid...... Or stupid......

In Marin's view, talent is the most important thing. Once a threat is made to a person, even if it is as precious as a giant panda, it can be killed without hesitation. Of course, giant pandas will sell cuteness to please humans, but they don't need to be killed. Lions and tigers or something, either put up in a zoo to please humans, or die! The kind of people who care for lions and tigers and release them back to nature, Marin has an evaluation - Big Sabi!

What does it matter to you how the lion and tiger feel? You must know that lions and tigers, in fact, are similar to human criminals, they are very dangerous existences. You let a murderer go? In the same way, even the ancients knew that it was stupid to let the tiger return to the mountain. However, some modern people who think they are smart can still do this kind of Sabi thing.

For example, in the savannah of East Africa, more than two million wildebeests, zebras, antelopes and other animals migrate back and forth every year. However, less than 30% of them are able to return to their starting point each year. The remaining 70% were basically eaten by lions, hyenas, cheetahs and other animals.

In other words, more than 1.4 million animals such as wildebeests, zebras, and antelopes die every year at the hands of predators such as lions, cheetahs, and hyenas. If all these animals were turned into food, how many people would have to be fed...... As for whether lions, cheetahs and hyenas will starve to death...... They're not your (animal protectors) father, so why do you care about their lives or deaths? Just keep a few thousand in some zoos for humans to admire, and the rest can be killed and eaten meat......

……

Of course, Europeans and Americans appreciate the behavior of African black buddies. Because, only if they are stupid, they can control it.

Just like later generations of Huaxia, in fact, they didn't pay much attention to teaching those black international students, and the requirements for international students were very low. Many college students are jealous of those black international students, who are all day long, don't know anything, and still live a chic life. As everyone knows, after such a person goes, he will be a "top student" in their tribe, and then he will rise all the way......

Therefore, after these scumbags returned to China, they still had that virtue, and there were not many who had grown. Then, until Marin crossed, there were not a few black African countries that really developed......

If you really want to ask those black students according to the requirements of domestic students, Marin doesn't know how many of them can pass. But Marin knows that if black African students can reach the level of ordinary undergraduates in China and build their motherland after returning home, Africa will never be like that......

As far as Ma Lin knows, it would be good for foreign students from many universities in China to be able to speak Chinese well. As for the grades...... It's hard to put into words......

It is said that it is the result of domestic universities accepting everyone in order to improve their qualifications. However, as a conspiracy theorist, Marin always felt that this was deliberate, and was he unwilling to teach them "real kung fu"?

Of course, the past is long gone, and Marin doesn't delve into that. Marin changed his attitude about how to control the Americas in the future, and planned to treat the whole of America in this way......

First of all, blacks were not allowed in the North American colonies. Even if they enter, they will have a ligation operation in Grenada beforehand to prevent blacks from leaving descendants in North America and becoming a hidden danger.

Similarly, in South America, Argentina and southeastern Brazil are not allowed to enter the country. Even if you want to enter, you have to have a ligation surgery first......

Then, the rest of the Caribbean and other tropical parts of the Americas, including Mexico and Peru, don't matter. Most of the black slaves who entered those areas would enter as servants. They were not sterilized and were allowed to marry local Indian women and give birth to mixed-race children.

In the future, Marin intends to operate North America and Argentina as well as southeastern Brazil as a native and hand them over to his descendants.

The rest of the Americas, on the other hand, were treated as colonies. For example, in Mexico and Peru, Marin only values gold and silver mines, and nothing else matters. Therefore, it doesn't really matter whether there are blacks in the locals or whether there are blacks of mixed race. Moreover, with the mixing of blacks, the local area is better managed. After all, as an alien colonizer, it is a bit difficult to deal with the whole indigenous people. And with the same foreign blacks and black mixed-race children, it is easy to divide and co-opt and indirectly control......

Moreover, Marin would continue the tradition of bringing in black slaves from Africa as servant troops. Those early black slaves have always been honest and peaceful, and strong and obedient, and they are very suitable for the Eagle Dog Servant Army. They were all outsiders, alien to the locals, and had to rely on the colonial authorities to facilitate the control of the Beihai Empire......