Conversation so far:
how many words are in the japanese language
how many levels of politeness are there in the japanese language
Broadly speaking, there are three main politeness levels in spoken Japanese, the plain form called kudaketa, the simple polite form called teinei and the advanced polite form called keigo.
how many people speak japanese
Japanese is spoken by about 128 million people
how many people speak japanese outside of japan
Outside of Japan, there are 5 million people who speak Japanese with some degree of proficiency, predominantly Japanese descendants in Hawaii and Brazil.

Question: when did the first immigrants arrive in brazil
Self-contained rewrite: when did the first japanese immigrants arrive in brazil