Although Louis was very dissatisfied with the behavior of the Americans, just scolding could not solve any problems. After all, no matter how much he scolds, even if he mobilizes all the employees of the entire Louisiana Development Bank to scold together, can he still scold Jefferson or Nelson to death?

But the situation of the war in the United States cannot go on like this, and he must take measures to turn the tide of the war. Strategically, at least for the time being, Britain was France's worst enemy. The reason why France supported the idea of the Americans declaring war on Britain and fighting the British was to prove to the rest of the world that Britain was nothing more than a giant with feet of clay, a paper tiger. As long as you dare to fight, you can tear a piece of flesh from the British.

If the Americans succeed in tearing off a piece of flesh from the British this time, it will expose the weakness of the British to the whole world, and then, perhaps, there will be a frenzy to carve up the United Kingdom, or at least its colonies. This frenzy will not only be confined to North America, but will also spread to Africa, and even to Central Asia and India in the future.

But if the United States has nothing to gain in this war, it will make people feel that the British are still real tigers, then at most the French will continue to trouble the British, but other countries will honestly watch the show. In this way, France could only rely on its own strength to deal with Britain, considering that France could not press all its forces on sea power like Britain, so it would be a long time to defeat Britain.

"Our power at sea, at least our power at sea in Louisiana, is not enough to change the tide of the war." Louis said to Governor Marcel, "Even if we join directly, it won't be of much use. However, maybe we are on land and can send mercenaries to fight against the British? ”

"Send mercenaries? That's also a way to do it. However, we are not completely out of the ropes at sea. Governor Marcel said.

"At sea? We only have a few colonial cruisers in our hands, and together we can't take that old British virgin. Louis shook his head.

"I heard that not long ago, an American approached you and sold you a submarine?" Governor Sayre said.

"You know this? But that submarine was not sold to us, but as a payment for a debt default. Louis asked.

"That guy came to a friend of mine and wanted to get an investment from him. My friend was a Navy man, and he said that the guy's submarine was really useless, at most, it was used to sneak into someone's military port and put a time bomb under their warship - but I think it would be too late for the British to take Atlantic City. But when they take down the next target, maybe there's a chance to use this to attack them. ”

The submarine that the Americans sold to Louis was actually a modified version of the submarine that the Americans tried to use to attack the British fleet during the Revolutionary War in 1776.

The concept of submarines should have been proposed by Leonardo da Vinci at the earliest, but Leonardo da Vinci did not come up with a design plan. Later, people have completed some designs with wild imagination, and some have even completed entities and conducted experiments. For example, in 1620, the Dutch engineer Cornelius van der Le Ber built the first successful submarine in history, and was later called the "father of submarines". His submarine is a sealed boat, driven by 12 sailors paddling and has repeatedly performed in the Thames River in England in water more than 5 meters deep. However, its role is limited to performance.

For more than 100 years after that, submarines basically did not make much progress, and basically could only be used for performances.

By 1776, during the American Revolution, American David Bushnell made a "submarine" out of wood by himself, which was used to attack British warships. The submarine, named "Turtle", looks like a duck's egg, floating vertically in the sea, loaded through a leather bag, draining the sea water to regulate displacement, control the float and sink, and propelled by a hand-cranked propeller.

David Bushnell was outside the submarine, brought a powder pack, and also prepared a drill bit on the submarine, he planned to drill a hole in the British warship first, and then fix the powder bag on it and detonate it.

This design is theoretically feasible, but in practice, the submarine has only one crew, who has to control both the depth, the course, and the power...... As a result, after this thing goes into the sea, it is difficult to control and moves slowly. So in fact, this thing didn't make a single successful attack at all.

However, the submarine that Louie and the others just got has a lot of improvements. For example, it's a little bigger, and it can already hold two people. Such a person controls the depth, and one person controls the course, which is much stronger than the previous "Turtle".

Of course, the biggest improvement of this submarine is that the power source has changed from a human to a battery pack. Relying on a battery pack and an electric motor, this thing can move slowly underwater at speeds of up to three knots. This is of course very slow, not even as fast as many ocean currents. However, compared to the hand-cranked propulsion of the "Turtle", it is actually much faster.

Of course, it is no longer possible to drill a hole in the bottom of a warship with a hand-cranked drill and then fill it with explosives. But there is actually an easier way to deal with a steel warship, use a large magnet to suck a submarine full of explosives under the ship, and then set the time, and the person can swim away by himself.

"You mean, our warships took this thing and watched the actions of the British all the way. When the British march into Hong Kong to rest, we will put this down? And then, um, I went to see this stuff out of boredom. There may be a chance of success. You can give it a try. Louis said.

"Shall we do something with the time bomb and let it explode as soon as it is activated, so that no one is captured and we are exposed." Governor Marcel said.

"No, I don't." Louie shook his head, "Let them speak." We just don't admit it. If they dare to BB, we will say that they shamelessly insulted us, demand that they publicly apologize and eliminate the impact, otherwise, we will go to war against them! I don't believe they dare to talk nonsense. To be honest, we have been missing an opportunity to intervene on a larger scale. ”

"If the British really suffer losses, it will be difficult for them to endure it. But even if they really could endure it, it would be useless. We can find a bunch of condemned prisoners, drag them to the border area, change them into British clothes, and shoot them all. Putting a British rifle in each of them would accuse the British of the invasion. Governor Marcel said.