they turned against them because they were fighting for power and they adopted Western firearms so they could firm them to leave.
Japan saw foreigners as a threat after Spain seized the Philippines.
In the mid-1500s, Japanese shoguns turned against foreign traders due to fears of foreign influence, particularly from Christianity, which they believed threatened their authority. Following events like the Shimabara Rebellion, strict isolationist policies were implemented to maintain control over the population. This led to the expulsion of foreign missionaries and limited trade with only a few countries.
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