Textbook A

Upset by the fast and astonishing growth of the power of the Republic, the American invaders hastened the preparation of an aggressive war in order to destroy it in its infancy....The American imperialists furiously carried out the war project in 1950....The American invaders who had been preparing the war for a long time, alongside their puppets, finally initiated the war on June 25th of the 39th year of the June calendar. That dawn, the enemies unexpectedly attacked the North half of the Republic, and the war clouds hung over the once peaceful country, accompanied by the echoing roar of cannons. Having passed the 38th parallel, the enemies crawled deeper and deeper into the North half of the Republic...the invading forces of the enemies had to be eliminated and the threatened fate of our country and our people had to be saved.

According to each Textbook A, how did the Korean War start?
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According to Textbook A, the Korean War started with the American imperialists aggressively preparing for and initiating a war in 1950 in order to destroy the fast-growing power of the Republic. The American invaders, alongside their puppets, unexpectedly attacked the North half of the Republic on June 25th, leading to the echoing roar of cannons and the invasion of the North half of the Republic.