Difference between Nationality (nation) and Ethnicity (ethnic identity)

This homework is about "Race in America" for this coming Monday & Wednesday classes. Please read the slides, and the article, and watch the video.
1- Distinguish between Nationality (nation) and Ethnicity (ethnic identity) by defining each.
2- explain the factors that shape different ethnic groups and give them their uniqueness.
3- Define ethnic enclaves and then explain why ethnicity is stronger in some groups than others.
4- How was the concept of race found and born? (the answer for this question is in the video)
5- Why do people attach ideas to different races?(the answer for this question is in the video as well)
Link for the slides:
https://docs.google.com/a/miamioh.edu/presentation/d/1YLN5OrJG9Bn4OP9SZYWQN7xvkQNeY7YIM_6nitWZvVI/edit?usp=sharing
You must read the article and watch the video by Sep 18 for class discussion:
How Real is Race (4).pdf
Please watch the below video by Wednesday class.