After the geneva accords, cub, a france, north vietnam, or south vietnam, became a democratic republic allied with the united states.

South Vietnam,

Hope this helped.

-Davismr00.

South Vietnam is your best answer.

It is not:

Cuba, because cuba was officially a communist country, especially after it received support and financial backing from the Soviet Union
North Vietnam, because it was already a communist regime that later took over South Vietnam in the Vietnam War.
France, because France had a strong democratic background, and was already listed as a democratic state by the Geneva Accords.

hope this helps

Is it true? i think it is