Which of the following best explains why the us government placed restrictions on asian immigration through angel island?

Mainly due to the xenophobia supported by the racial theories.

Explanation:

In the early 20th century, the US received many immigrants, many of them from Europe and Asia. At that moment, racial theories such as Social Darwinism and Eugenics were emerging. In a nutshell, they tried to explain the social problems based on the racial mixture. For the social reformers who based their changes in the racial theories, immigrants were a huge problem. Many of these social reformers were members of the government, and they could create immigration laws. Between 1890 and 1930, the US anti-immigration policy increased its strength and range, avoiding several Europeans, Asians, and Africans to get into America.

i do not know if this question has options, but a main impact of the federal reserve act of 1913, which created the federal reserve bank, was the international use of the u.s. dollar, which soon became the world's leading currency - particularly during world war i, since many nations around the world asked the united states for money.

affirmative action refers to the policies that take gender, race, or ethnicity into account in order to promote equal opportunity.

employers subject to title vii are prohibited from taking race or sex into account in any employment decisions. aa is a penalty for having any job group substantially statistically "underutilized" in any race or either sex. the employer must take steps to eliminate the underutilization, then stop, ending its aa efforts