In the Treaty of Portsmouth, Japan gained control of half of Sakhalin Island.
2. Many young people worked as an apprentice for other people who had big jobs, such as writers, blacksmiths, fisherman,etc.
OR. Jonathan had to work as an apprentice for a programmer for 5 years, until he could become one himself.
3. I am not very sure of the answer for this but this is what I think:
Since the town was more diverse, everyone meet new people , as well as learning different ways to live and create a lifestyle.
Hope I helped!