What is the significance of Columbus's discovery of the New World?

From a historical point of view, Columbus's discovery has become a new era of the development and colonization of the American continent, which is a major turning point in history. /kloc-in the 0/5th century, the population of Europe expanded rapidly. After westerners know about America, Europeans have places to emigrate, as well as minerals and raw materials that can change the European economy. But at the same time, this discovery led to the destruction of Native American Indian civilization. The successful opening of the new airline has further promoted cultural exchanges around the world. American rubber, corn, tobacco leaves, sweet potatoes, cocoa and potatoes were all brought back to Europe by the Spanish and spread all over the world. European immigrants brought plants such as barley, rye, oats and rice and livestock such as horses, cows and mules to America and took root, which greatly enriched the cultural exchanges between the eastern and western hemispheres. On the other hand, in the long run, this discovery has also led to the emergence of some new countries (the United States and so on. ) In the Western Hemisphere, it is completely different from the Indian tribes who once settled in this area, which has brought great influence to the countries of the Old World. It can be said that Columbus' discovery of the New World was objectively progressive on the basis of injustice.