Complex sentence: Bac Kan is one of the important places of Vietnam, at Phu Thong, a district of Bac Kan, Ho Chi Minh president has ever visited in France prevented war.
Split into simpler sentences: Bac Kan is one of the most important places of Vietnam. At Phu Thong, a district of Bac Kan, Ho Chi Minh president has ever visited in France prevented war.