Final answer:
Old style immigration refers to immigrants from Western Europe in the early 20th century, while new style immigration refers to more recent immigrants with diverse backgrounds.
Step-by-step explanation:
The difference between old style and new style immigration can be seen in the demographics and cultural backgrounds of the immigrants. Old style immigration refers to the influx of immigrants in the early 20th century, mainly from Western Europe. These immigrants were often referred to as old-stock Americans and were predominantly Protestant. On the other hand, new style immigration refers to the more recent immigrants, who have diverse ethnic and religious backgrounds, including Arab immigrants since 1965.