The freedom riders associated with the Congress of Racial Equality
I would say the correct answer would be the Olmec civilization. They were considered as the mother of all Mesoamerican cultures. The Olmec culture had several impact to different ancient culture like being great traders and being travelers. Hope this helped.
The answer is letter A. The California Alian Land Law of 1913 prohibits foreigners from owning lands, stocks and other properties. They were also not allowed to lease them for more than three years of tenure. Many Chinese, Indian, Japanese and Korean immigrant farmers were deeply affected of this law. This law was implemented to stop foreigners from immigrating, specially Japanese immigrants and to create an inhospitable climate with the other immigrants in California. Around this time, there was an on going Anti-Asian prejudice going on causing the implementation of this law.