Answer:
I believe it was because immigrants were coming into the country and the Japanese were afraid that they would take their jobs.
He contributed by becoming elected unanimously to become the president of the convention in<span> 1787, </span>
To resolve their differences the delegates used "compromise", with each side giving up something but gaining something else. This was the basis of political power and still is, to a certain extent.
<span>Westerners who ruled territories directly denied the influence of natives because they
</span><span>considered the territories as an extension of a home country, so they demanded that natives conform.</span>
It's the same as an eye for an eye and a tooth for a tooth.