The first picture shows the population in percentage of Asian spread across the continental United States. Clearly, in the map, the density of Asian population is much higher in the west coast and the east coast than in the middle. Because of the history, Asian people were brought to America as workers focusing on mine jobs, railroad builders. With the reason that Asian came to United States by sea and first located at the coast, most of them would stayed at coast forming Chinatowns or Kreantowns. Los Angeles, New York, and other cities along the coast had lots of work opportunities, especially, the gold mine in San Francisco, giving Asian worker a place to seattle. Even though many Asian population spread across the entire continent, many still remain at coast, leading the high Asian population percentage in the southwest and northeast coast.
The second picture gives an image of the population percentage of other race, which is not labeled as "White", "Black", "Asian", "American Native and Alaska Native", and "Native Hawaiian ans other Pacific Islander". It is shown that most of them lives at the southwest and west of the continental United States. The other races are mainly the Hispanic population immigrated from central America. As we can see in the map, California, New Mexico are the major states for Hispanic population because of the short distance connected with Mexico. Moreover, on the other side of the map, Florida, we can see a little darkness along the shore. The other races in Florida are mainly people immigrated from Cuba for the same reason Mexicans came to the southwest. The short distance connected with their home country is the reason that high density of other race population in the southwest and Florida.
The last map, namely the Black population distribution in the continental United States, has the distribution of the population more concentrated. As we can see, more than half of the population in the southwest is African-Americans. Large population of African-Americans in the southwest is the result of the slavery history. Most of the Africans were shipped to the southwest of US for the large number of labor needed in the slavery age. After the slavery, most people brought to United States still chose to stayed at the southwest. Compare to the Asian and other race population density, the Black population is more concentrated.
In this lab, knowing the distribution of Asian, Black, and other race population is just part the of result. Moreover, a better understanding of the use of the GIS is gained during the process. I have learned the combination of the country and the census. The color option is very useful to show the difference between the population, which gives people a direct image of how the distribution is. Furthermore, with this lab, more applications of GIS is discovered, the join of implement data, arithmetic of the data, and the convertor of GIS helps me knowing a lot more of how to making a better map.
