What continents did North American immigrants come from?

According to the time, the immigrants from North America are:

The first immigrants (5,000 years ago): from Asia (Indians)

The second group of immigrants (1000 years ago): vikings from northern Europe (Greenland)

The third group of immigrants (500 years ago): from Europe (West, Netherlands, Britain, France, Germany ...)

The fourth group of immigrants (400 years ago): slaves from sub-Saharan Africa.

The fifth batch of immigrants (before 150): employees from China and Japan.

The full name of North America is North America, which is located in the northern part of the western hemisphere. It is the second most developed continent in the world, in which the American economy ranks in the forefront of the world and has an important influence on the global economy and politics.

Most of North America is a developed country with a very high human development index and economic level. It is the most open-minded and free continent. It faces the Atlantic Ocean in the east, the Pacific Ocean in the west and the Arctic Ocean in the north. It faces South America across the Panama Canal in the south, and Europe across the sea in the east, with a superior geographical position. The area is 24.228 million Km? (including nearby islands), accounting for about 16.2% of the world's total land area, is the third largest continent in the world. Common English, followed by Spanish, French, Dutch, Hindi and so on.

The economic development in North America is very uneven. Except the United States and Canada are developed countries, all other countries are developing countries.