As a result, immigrants primarily from which Asian country began to immigrate to the West coast

Originating primarily from China, Japan, Korea,India,Russia and the Philippines, these early migrants were predominantly contract workers who labored on plantations. With the annexation of Hawaii by the United States in 1893, a large population of Asians lived in US territory and more would continue to immigrate.

Explanation:

the historians cited in the article all agree with one another about the cause of the civil war. despite coming from different backgrounds and cultures, the historians agree that slavery was the root cause of the civil war. the fact that all these historiansgenerally agree with one another makes their shared viewpoints more reliable and valid, especially because the historians have different backgrounds and all work for the well-respected institutions of howard university, clemson university, and the university of colorado.