For Russia, on the one hand, it is worried about the British occupation and the attack on Russia. At that time, the Crimean war broke out with the British and French Coalition forces, and Russia was defeated step by step. Alaska is located near the British and French colonies in Canada. Britain has more than 40,000 regular troops in Canadian colonies, while Russia has only more than 700 in Alaska. Therefore, Russia is worried that Britain and France will use Alaska as a position to invade Russia.

On the other hand, there is no money. At that time, Russia was poor, the weather in Alaska was bad, and most of the time it was extremely cold, so it was difficult to develop planting and other industries. Moreover, their power center at that time was in Europe, and Alaska was far away, out of reach and difficult to control, so this land was useless to them. It was better to exchange money to subsidize the army.

So from these two aspects, Alaska is more advantageous to sell to the United States. For the United States, Alaska is very attractive because it is located around the United States and Canada and is a military location. But beyond that, countries around the world were still not optimistic about the development of this land at that time, but who knew that a large number of mineral resources would be found in it many years later.

In fact, Russia was a buyer looking for Alaska all over the world at that time, but this barren land was really ignored. Finally,1March 30, 867, the United States bought Alaska for $7.2 million. It can be described as the largest land transaction in the history of global land transactions. This day is also called "Alaska Memorial Day". At that time, the leaders of the two countries were very satisfied with this, but the American people were very dissatisfied. Some people even joked that Alaska is "Schwartz's refrigerator". Schwade insisted that he was optimistic about the value of this land.

Until about 1900, the United States discovered rich mineral resources such as gold and oil under the soil of Alaska. Later, it officially joined the United States in 1959 and 1, becoming the 49th state in the United States.