Does it mean something like
Also, from interpreting history, we know Japan's development is in fact mostly due to Western medicine (or Western medical science).
I might have the first part wrong but basically my question is what does 发端于 mean here?
I'm guessing 发 means development or expansion but the othert I don't know.
William from China
发展 means develop, but 发 alone has many meanings
Here 发 means 发生，出现，in English, appear or come up.
端 means one of the ends of something, like a chopstick. the abstract meaning is the beginning of something
In fact, 发端 is one term, or phrase，you may call it.
发端 here means start
于 means from
so 发端于 means start from.
Hope it helps
I'm trying to read more in Chinese but often two character words are shortened so it's difficult because dictionaries don't really help much for this kind or problem! I really appreciate your help!