Match each era with the typical immigrant population. colonial era (1600-1800)
England, Scotland, Western Europe, and
Africa
early 1800s (1800-1860)
Latin America and Asia
late 1800s (1870–1910)
Ireland and Germany
modern era (1960-present)
Italy, Russia, Poland, and China

England, Scotland, Western Europe, and Africa - Colonial era (1600-1800)

During the colonial period, the main people coming were from England Scotland as they aimed to establish British colonies in the Americas. Enslaved people from Africa also made up a lot of the population.

Ireland and Germany - Early 1800s (1800-1860)

After the U.S. gained independence, other western Europeans felt more comfortable joining the nation and so more people came from Germany and Ireland.

Italy, Russia, Poland, and China - Late 1800s (1870-1910)

Towards the late 1800s, eastern Europeans joined due to upheavals in their area. A lot of these Eastern Europeans were Jews as well.

Latin America and Asia - Modern era (1960-present)

In the the modern era migration has mostly been from Latin America and Asia especially in response to the spread of Communism in South east Asia.  

the answer is richard nixion