Battle of Dien Bien Phu

Stalemate, resulting in prolonged conflict

Chinese intervention, leading to ceasefire

Viet Minh victory, effectively ending the eight years of war (correct)

French victory, leading to the end of the First Indochina War

French and Viet Minh forces (correct)

French and British forces

French and Viet Cong forces

Viet Minh and North Korean forces

Northern Vietnam (correct)

Southern Vietnam

Western Vietnam

Central Vietnam