The occupation that it referring to is : skilled and unskilled miners
This treaty was enacted in 1880 , back then the job as a miners is pretty much the equivalent of today's engineer in the term of hotness and availability.
Hope this helps
Religion
The Japanese combined Buddhism with
their Shinto religion. Shinto was based
on respect for the forces of nature
and ancestor worship. Buddhist rituals
became part of Shinto.
Government
Japanese rulers such as Prince Shotoku
worked on building a strong central
government similar to the Chinese
government.
Culture.
The Japanese adopted Chinese styles
of cooking, gardening, drinking tea, and
even hairdressing. They based their
system of writing on Chinese characters.
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</span>Korea had a major impact on japan too. for example, the Buddhist religion traveled from Korea throughout china and japan making a major impact on their religion and culture.
A or d are the most reasonable answers
