Identify and/or evaluate the decisions made by national and state governments related to immigration and other civil rights issues

The correct answer to this open question is the following.

We are talking about United States politics in the 1920s. There were many decisions made by national and state governments related to immigration and other civil rights issues during these years. This was a time when civil rights movements caused fear among people and the government created a series of regulations that maintained segregation and discrimination in the country. Regarding immigration, American citizens developed nativist reactions, confronting immigrants. The goverment established legislation that limited the number of immigrants from certain countries. This was a time when notorious civil rights organizations such as the National Association for the Advancement of Colored People started to exert pressure in the US government. They organized demonstrations, took the streets and protested for the injustices committed to African Americans and other minorities.  

can you tell me what is it

answer; /// the correct answer is evidence of the olmec civilization has been found in southern american in a hot steamy forest, archaeologists have found earthen artifacts at several sites that were evidence of the olmec civilization. these   artifacts were mounds,courtyards and pyramids build of stones, also on top of the mounds were many monuments made of stone, some of these stone structures are very large, they weigh as much as 44