From 2006 to 2009, which two regions have provided the largest number of United States immigrants? Explain what it means for an immigrant to have a green card. (Site 1)

Which statements accurately describe a country's currency? select all that apply. the currency is easily divisible. the currency can be used in any other country. the currency has a value that can change. the currency has denominations. the currency has a value that must stay the same.