From the 17th to mid-19th centuries,, Japan had kept to itself.Foreigners were banned, except at a few trading ports.Everything changed in 1853, when warships from the United States arrived, wanting Japan to open more ports and increase trade between them.The Japanese realised that they had fallen far behind the Western countries.To catch up, Japan had to change.In less than 50 years, Japan became a modern, industrialised country. However, being a mountainous and heavily forested country, Japan lacked natural resources of its own.At the same time, Japan had ambitions of becoming a great power.To do this, the Japanese set out to build their own empire in Asia, which would give them the land and resources they needed.
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