During the late 1800s the Chinese immigration rate dramatically

decreased because of new legislation

decrease because of the war in china

increased because of a gold rush

increase because of job opportunities

The good answer is: It decreased because of new legislation.

Explanation:

In 1882, Congress passed the Chinese Exclusion Act. It suspended for 10 years the immigration of Chinese skilled and unskilled workers into the USA. Every Chinese person travelling in the United States had to carry a certificate telling his or her status. Cultural differences and ethnic discrimination were the reasons behind that move.