Which countries are new countries formed by the migration of the original countries?

Today, more than 200 countries in the world have received the attention of the United Nations. In addition, there are large and small "countries" struggling with fate. Among them, there are a number of countries whose nationals are basically assembled by immigrants. The largest of these countries is the advanced United States, followed by Indonesian and Singaporean immigrants.

The United States, known as the "ethnic melting pot", is a typical immigrant country. Its history can be traced back to17th century. In more than 400 years, the United States of America has formed a mixture of 100 ethnic groups.

After the victory of the American War of Independence, the inflow of population was initially restricted for the sake of domestic employment. Later, due to the need of internal construction of the country, the American government adopted an open policy to attract foreign personnel to join. Among them, many people came to the United States from China for gold.

Since then, the South American War broke out. Because of the demand for labor, Lincoln, then president of the United States, promulgated the Immigration Encouragement Act to encourage immigrants. At the same time, Secretary Seward even advocated issuing a circular to American diplomats in Europe, demanding that attracting Europeans to the United States and joining the United States be one of the most important diplomatic tasks. In order to recruit skilled workers from Europe to work in the United States, some enterprises also send delegations to Europe for recruitment. Scholars under the government contribute to European newspapers and describe the bright future of the United States. Even provide travel expenses for Europeans who come to immigrate.

Subsequently, the American government worked hard. In the second world war, it robbed a large number of professionals in the land of the defeated country and constantly improved itself. Because of the efforts of elites and the inclusive national policy of the United States, it has gradually stabilized its position as the world's number one. Although the American government's immigration policy has changed a lot, it is undeniable that immigration has created the United States.