The scarcity of manpower has led to the lack of development of labor-intensive industries in the north, and it is difficult for the textile industry to be self-sufficient. The more developed and unanimous are the mining industry, the metallurgical industry, the shipbuilding industry and the machine building industry and other heavy industries with high added value, these industries have achieved tremendous growth during the war, but after the war, they lost government orders and quickly fell into difficulties. Because they themselves are very developed, the war has prompted them to have a great surplus, even if it is related to tax protection, but the problem of excess is difficult to solve, and exports are not competitive, plus they have established a tariff protection system, and other countries also impose high tariffs on American goods, and they cannot export at all.

The rapid economic growth of any country is often accompanied by some characteristics, first of all, the rapid promotion of new technologies, and then the rapid increase in population, in fact, the rapid growth of the population is the basis of economic growth, and the economy is essentially a phenomenon of human activities, so the population is large, and the economy is naturally large.

The impact of the war has led to a halt in the flow of immigrants into the United States, the post-war financial difficulties, and the developable land in the United States has actually dried up, the vast west was taken away by China decades ago, and the United States, which has lost its large rear, has actually greatly reduced the attractiveness of European immigrants in recent years, and it is difficult to maintain it with high wages alone.

The economic crisis has made it difficult to maintain high wages, and the decline in wages has been limited, but it has not been able to provide jobs for new immigrants, and of course, it has not been able to attract immigrants, not only that, but the federal government has also begun to severely restrict immigration because of the unemployment rate.

The decline in national orders has led to the continuous contraction of heavy industry, and the textile industry, which is already uncompetitive, has been protected by high tariffs, but the cotton that originally came from the south has now become high in input costs and labor due to political and economic reasons, resulting in the light industry represented by cotton textiles is also in trouble.

Light and heavy industry was in a state of crisis at the same time, the financial industry, which had made a lot of war money during the war, was not doing well, Southern slave owners were in debt, and trade finance from the South was not passing through New York, but began to turn to ports less affected by the war, such as New Orleans.

The bond market is no longer booming due to the government's tightening of spending and debt servicing. The railway bonds, which were the most active before the war, also came to a standstill at this time, because the loss of the western part of the country left no room for the construction of the railway. The tens of thousands of kilometers of railways that were frantically built before the war were saturated long ago after losing the transportation business of bulk commodities such as cotton in the south.

As a result of these factors, the post-war Northern Confederacy began to fall into a state of long-term depression, and instead of protecting the country's industry, high tariffs prolonged the depression because the disruption of trade was detrimental to the economy. Because the price of imported raw materials will become higher, other countries will also close their markets. The raw materials and the market in the three elements of industrial development are in an unfavorable state, and the problem of insufficient labor force makes it impossible for industrial development to be good.

This continuous depression did not take a turn for the better until the outbreak of war in Europe.

The heavy industry that swelled during the American Civil War received a large number of orders, not only Britain and France placed a large number of orders to the United States, but Germany even had to purchase steel from the United States, but the British blockade of the German market was soon lost, but the orders of Britain and France continued to expand. As the scale of the war grew, and China entered the war, the British, in a panic, even began to place a large number of orders for warships with high prices and extremely lucrative profits to American shipyards.

As an important material, US grain has returned to its peak again under the condition that Germany and France have put a large amount of their own labor force into the market, and not only have the prices of grain exported to Britain and France skyrocketed, but the international grain prices of the whole have risen by a large margin, and US grain exports have once again returned to their peak.

The financial industry once again got the opportunity to finance the war, and during the Civil War, Cook and other financiers were trained, and they used their ingenuity and carried out a lot of financial innovations, and Britain and France began to borrow a lot from the United States, and the financial industry was very profitable.

With the recovery of the troika of heavy industry, agriculture and finance, the economy of the American North has survived the crisis and entered a phase of incredibly high growth.

This good life has benefited everyone, and the farmers of the Great Lakes, who make up the majority of the population, have been living better, providing markets for industrial goods, and the textile industry has survived the crisis.

In this kind of good life, people do not want to fight, and at this time the British came to the door and put forward very tempting conditions, which made the Americans tangled for a while.

The war between Britain and China evolved into a state of collapse in a short period of time, and the lack of compulsory military service and the disadvantage of a sparse population made British North America low in combat effectiveness, and it was impossible for nine million people to support a long-term war. The vast size of the territory is not an advantage at this time, but a huge disadvantage. Because the population is already small, scattered over a vast land, and the transportation situation is backward, it is already difficult to form an army, and it is even more difficult to assemble the army and transport it to the front.

Under these circumstances, Britain decided that it was impossible for them to keep their North American territories in the war, but fortunately they generously expressed to the United States that they were willing to transfer the entire North American territory to the United States, on the condition that the United States would enter the war.

The British North American Territory, although slightly smaller than historically, and the land west of Quebec and the Rocky Mountains, was not part of British North America, but it still retained most of the later Canadian land, with a total area of about 8 million square kilometers, which is larger than the entire United States.

In terms of population, although nearly half of the population comes from immigrants and descendants of immigrants from other countries, because the British population has always been dominant, and latecomers can only integrate into English-speaking society, British North America is a neighboring region with the American Chinese language. The political system and legal system are also very similar, which is a huge attraction for the United States Federation, which lost most of its territory due to the Civil War.

In addition, if the United States is not allowed to come here, then the Chinese will seize this place, allowing China to occupy the whole of British North America, which means that Chinese forces encircle the United States from three sides, which is extremely strategically disadvantageous.

Therefore, far-sighted American politicians are inclined to accept Britain's terms, but rational politicians are also full of anxiety about confronting China, which is not a force that the United States can confront now.

Not to mention the common people, a civil war is to scare everyone, and a series of policies during the civil war have made the civilian population and the organizations that represent it extremely unhappy. At the end of the Civil War, the United States implemented a compulsory military service system, but it opened a back door for the wealthy, as long as they could pay $300 in funds, they could be exempted from military service, which was extremely unfair to the poor. It leads to the opposition between the poor and the rich, and the war breaks out again, and the poor will never support it.

The rich are equally dissatisfied, and $300 is not a small amount, and the average middle class even has to go bankrupt to afford it. The aftermath of the last war had just ended with the outbreak of war in Europe, and they didn't want to spoil the good days. Therefore, although the issue of participating in the war was discussed by the Senate and the House of Representatives, it was high and low.

It would be nice if you could get the territory of Britain and North America without fighting, this is the idea of smart people, and once this idea appears, someone will start to push it, what people lack most is imagination, not execution, as long as you can come up with something, you can always find ways and means to achieve it.

Secretary of State William Henry Seward made the suggestion that British North America be acquired not by entering the war, but by purchase, from the British.