Question: In what year was the first law enacted to restrict Chinese immigration to the United States?

Explanation: The lectures connect early U.S. anti-opium/anti-Chinese politics to immigration control: 1875 (the Page Act) is presented as the first federal restriction targeting Chinese immigration, preceding the broader Chinese Exclusion Act (1882). (Lecture/Reading: Wright, Not Just a “Place for the Smoking of Opium”.)