What does the "melting pot" in TOEFL mean?

The "melting pot" in TOEFL refers to Americans, that is, Americans.

Americans are residents of the United States, mainly composed of immigrants and their descendants who migrated in different historical periods. Americans include more than 100 ethnic groups, belonging to three major races and all kinds of hybrids, with a population of more than 200 million. The United States is an immigrant country formed in modern times, with a history of more than 200 years, and Americans were formed in this short time.

The continental United States was once the hometown of Indians. From the16th century, Spain, the Netherlands, France, Britain and other countries began to immigrate there. /kloc-After the 0/7th century, Britain gradually established the 13 colony along the Atlantic coast, massacred and expelled Indians madly, and transported African blacks as slaves. During this period, Britain had the largest number of immigrants, followed by immigrants from Holland, France, Germany, Switzerland, Sweden and other countries. /kloc-from the end of 0/9 to the beginning of the 20th century, immigrants mainly came from Italy, Austria-Hungary, Russia, Ireland, Norway and other countries. After World War II, immigrants from Asia, Latin America and Oceania increased greatly.

Americans of all races generally call themselves Americans, but their distribution in China is characterized by large dispersion and small concentration. For example, the English, Scots and Irish live in the eastern states, the Germans live in New Jersey and the northwestern states, the Italians live in the middle of the Atlantic, and the French live in Texas and Louisiana.

Americans speak English and believe in Christianity and Catholicism. A few people believe in Orthodox Christianity, Judaism, Islam and Buddhism.

America is a country with a high degree of modernization. Since the 20th century, they have been at the forefront of the world in education, science and technology, industry, agriculture and military affairs.