During the colonial era, most immigrants came to the United States from. About 800,000 Irish immigrants came to America to escape in the early 1800s. Many German immigrants also arrived at that time as a result of. In addition, many people were brought to America by force from.

During the colonial era, most immigrants came to the United States from England. About 800,000 Irish immigrants came to America to escape poverty in the early 1800s. Many German immigrants also arrived at that time as a result of religious conflicts in their country. In addition, many people were brought to America by force from Africa.

Explanation:

The demographic history of the United States dates back to the colonial era, when the first settlers began to shape the ethnic outline of the nation.

From the 1600s and 1700s, with the creation of the first colonies in America, English settlers began to arrive on the continent, motivated mainly by issues of religious persecution and lack of civil and political liberties in England. Thus, the first colonies of the country, located in New England, were founded by these people.

Over the years, entering the 1800s, new waves of migration from Europe began to impact America. Thus, Irish escaping from the Great Famine and Germans escaping from the unification wars of their country began to arrive in the United States, settling especially in New York and the Midwest.

These three groups: English, Irish and Germans, form the base of the white ethnic group in the country, with minority components of Italians, Nordics, French and Russians.

In turn, during all these years until the end of the Civil War, millions of Africans were brought to the American continent to be used as slave labor. Today, their African American descendants make up about 15% of the country's population.