Why did some established mexican americans respond to the growing number of new arrivals with calls for immigration quotas in the late 1910s and 1920s?

Well, they actually feared that more recent arrivals would drive down the wages and also incite white prejudice against all the ethnic Mexicans in the late 1910s and 1920s.

Hope this helps.

americans had many intangible advantages. well since the british fought a war far from home military orders, troops, and supplies sometimes took months to reach their destinations, and the british had an extremely difficult objective. they had to persuade the americans to give up their claims of independence, americans had a grand cause: fighting for their rights, their independence and their liberty. this cause is much more just than waging a war to deny independence.

your answer will most likely be a.