Answer:
They were predominantly Syrian, Lebanese, and Jordanian Christians.
Step-by-step explanation:
There were some restrictive policies concerning immigration from the 1920s to 1965. These restrictions influenced all the aspects related to immigration. However, Arab immigration has remained steady since 1965. Most of the immigrants from this period were Muslim and they were usually highly educated. They were looking for better opportunities.
Helen Samhan who belongs to the Arab American Institute, considers that the Arab-Israeli conflicts that took place in the 1970s have significantly helped to the establishment of anti-Arab sentiment in terms of culture and politics in the United States.