Which of the following was a reaction to anti-japanese sentiment on the west coast during the early 20th century?

The formation of the Gentlemen's Agreement.

On December 7th 1941, The US entered WWII when Japan attacked Pearl Harbor. On those day about 113.000 people of Japanese ancestry were living in the west coast, in states like California, Oregon and Washington.

President Roosevelt signed executive order allowing The US Army to designate areas "any person may be excluded". However no person from Japanese ancestry was ever convicted of any act of espionage. While 18 Caucasians were tried for spying for Japan.  

After the Pearl Harbor attacks an anti-Japanese prejudice took place all over the states, but mostly in states like California, where the local governments established laws against the increasing immigration of Japanese and Asians all together.

The Land Law which prohibited the ownership of agricultural land by "aliens ineligible to citizenship." In 1920, a stronger Alien Land Act prohibited leasing and sharecropping as well. Both laws were based on the presumption that Asians were aliens ineligible for citizenship, created  very complex situations for Japanese living in The US.

mustafa ataturk thought nationalism in turkey would best be achieved by modernizing the country.

the government paid religious orders to provide basic education to native american children on reservations. in the late 19th and early 20th centuries, the bureau of indian affairs (bia) founded additional boarding schools based on the assimilation model of the off-reservation carlisle indian industrial school.