Answer:
The correct answer is 1) All Chinese immigrants in the US were required to return to China.
Step-by-step explanation:
The Chinese exclusion law decreed the restriction of the migration of Chinese citizens to the United States, was signed in the year 1882 with a duration of 10 years and was renewed in 1992, becoming permanent.
During the period of Chinese migration in the United States, there was a gold rush and the construction of the railroad. Hence, the Americans felt threatened by the Chinese because they thought that they were taking their jobs away; this was the reason for conducting campaigns against Chinese workers, obtaining; as a result, the Chinese exclusion law.
The Chinese exclusion law prohibited more migration in the United States, and the Chinese immigrants who were already in the country went through many difficulties such as poorly paid jobs, mistreatment, exploitation, many of them lost their lives in violent attacks.
I hope this information can help you.