What did Columbus bring to America after he discovered the New World?

After Columbus discovered America, European immigrants flooded in and occupied the living space of Native Americans (Indians). European colonists, first Spain and Portugal, then Britain and France, occupied Indian land, plundered natural resources and destroyed Indian civilization.

European immigrants brought smallpox, measles and other infectious diseases from Europe. Indians who have lived in America for a long time have no immunity to these diseases. Spanish and British colonists slaughtered and persecuted them, resulting in a large number of Indian deaths. By the end of 18, the Indians in Mexico, Cuba and other places were extinct.

Columbus's main achievement: He initiated a new era of new continent development and colonization. At that time, the population of Europe was expanding. With this discovery, Europeans have two new continents to live in, and they have mineral resources and raw materials that can change the European economy.

This discovery led to the destruction of American Indian civilization. In the long run, it has also led to the emergence of some new countries in the western hemisphere. These countries are very different from the Indian tribes who once settled in this area, and they have greatly influenced the countries of the old world.

He shifted the route of overseas trade from the Mediterranean to the Atlantic coast. From then on, the West finally walked out of the darkness of the Middle Ages and began to rise in the world with an irresistible trend, and in the following centuries, it achieved maritime hegemony. A brand-new industrial civilization has become the mainstream of world economic development.