Question

what was the predominant fear concerning japanese americans in the early days of world war ii? that they would take americas new weapons production jobs that they would make a powerful appeal for peace with japan that they would join a possible invasion of the west coast

Explanation:

During the early days of World War II, due to the war - time hysteria and the perception of Japanese - Americans as a potential threat because of Japan's military actions, the main fear was that they would aid a possible Japanese invasion of the West Coast. There was little concern about them taking weapons production jobs as there was a large labor need for the war effort, and an appeal for peace was not a dominant fear.

Answer:

that they would join a possible invasion of the West Coast