Question

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Explanation:

1. For the first source (Kim, Doojin): It is a South Korean textbook, which aligns with Textbook B's framing that references South Korean perspectives of the Korean War. Supporting language from Textbook B includes framing related to North Korean aggression and South Korean defensive framing, consistent with South Korean educational narratives.
2. For the second source (History of the Revolution...): It is a North Korean textbook, matching Textbook A's focus on American "imperialism" and framing the U.S. as the instigator, which is consistent with North Korean historical narratives about the Korean War.

Answer:

1. Kim, Doojin. Korean History: Senior High. (Seoul, South Korea: Dae Han Textbook Co.), 2001.

Textbook B
Supporting language (from Textbook B excerpt): References to North Korean forces initiating conflict, aligning with South Korean historical framing of the war's start.

1. History of the Revolution of our Great Leader Kim Il-sung: High School. (Pongyang, North Korea: Textbook Publishing Co., 1999).

Textbook A
Supporting language (from Textbook A excerpt): "the American imperialists hatched the preparation of an aggressive war in order to destroy it [the Republic]" and framing of U.S. as the instigator of the conflict.