Concept:A country may break diplomatic relations when another state’s action threatens its security or regional stability.
Explanation:In 1961, Nigeria severed diplomatic relations with France because France carried out an atomic bomb test in the Sahara Desert.
Nigeria had warned that the test would be dangerous to Nigeria and other African countries.
France ignored the warning and proceeded with the test.
In protest, Nigeria imposed economic measures against France, starting with a ban on French ships entering Nigerian coastal waters.
The main reason was therefore France’s nuclear test in the Sahara, not poor relations with Francophone countries, France’s ties with Israel, or General de Gaulle’s attitude.
Answer:B. France atomic test in the Sahara desert.