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Because if the North over ran/took over the south there would have been another Communist country to worry about.

also North were killing innocent people.

remember THE UN / alot of nations were involved in Protecting the South Korea had been invaded in WWII by the Japenese. US forces occupied part of Korea helping the South Koreans recover from WWII. When North Korea invaded South Korea US forces assisted in their defense until UN Forces arrived as well as more US Military aid.

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Renee Dietrich

Lvl 13
3y ago

What else can I help you with?