In both the Korean and Vietnam War which country invaded first?

The Korean War (1950-1953) began when the North Korean Communist army crossed the 38th Parallel and invaded non-Communist South Korea. As Kim Il-sung's North Korean army, armed with Soviet tanks, quickly overran South Korea, the United States came to South Korea's aid.

Explanation:

In 1975, North Vietnam defeated South Vietnam and took control of the country. The Korean War was a conflict between North Korea and South Korea. ... It was the most widespread war in history, with more than 100 million military personnel mobilized.

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