Social Studies–2008/2009

Here are 2 web addresses from ask.com that have some good information on the immigration research:
http://memory.loc.gov/learn/features/immig/introduction.html

http://library.thinkquest.org/20619/index.html

For other immigrant groups that are not found on these sites , try going to google or ask.com and ask for a specific group–such as Portuguese or Spanish immigration to the USA