Answer:
Industrialization is the process by which an economy is transformed primarily agricultural(used for farming or relating to farming: The world's supply of agricultural land is shrinking fast.)one to one based on the manufacturing of goods. Individual manual labor is often replaced by mechanized mass production, and craftsmen are replaced by assembly lines.
Japan experienced many new positive things because it started becoming more modernized after a long period of seclusion. Of course, some conservative people were against this western influence and rebellions ensued, but it was eventually all solved.
The population of Puerto Rico traces its ancestry in mostly the Spanish colonists and the indigenous people of the island. They have mixed over time and gradually created a mestizo population, which became the dominant population on the island and still is. There are of course some other influences in the gene pool of the Puerto Ricans, with some of it being from the African continent because of the African slaves that were brought, but it is a small minority, and it is also a population that has been heavily mixed.
This means that public services such as bathrooms or water fountains could still be whites only or blacks only but they had to be equal in quality. (i.e the bathroom for whites only could not be very clean and fancy while the blacks only bathroom was dirty).