I think it is for personal profit
One piece of evidence that Duara uses in the passage to support his claim regarding Western racial attitudes and Japanese militarism in the second paragraph is where he says that Japan was allotted a lower quota of ships than the British and Americans.
Or you can say...
Discrimination was perceived in the international conferences in Washington (1922), the London Naval Conference (1930), and wherever Japan was allotted a lower quota of ships than the British and Americans. But most of all, it was the buildup of exclusionary policies in the United States and the final Exclusion Laws prohibiting Japanese immigration in 1924 that galled Japanese nationalists. In their view, Asian civilization did not exhibit inhuman racist attitudes and policies of this kind, and for [Japanese] militants . . . these ingrained civilizational differences would have to be fought out in a final, righteous war of the East against the West.”
Answer:
The new mining towns enforce laws and keep the peace by vigilantes punished lawbreakers. ... That is why mining towns enforce laws and keep the peace by vigilantes punished lawbreakers. The members of the western communities had to defend themselves and they formed groups of vigilantes to secure their property.
