When a country is not at war or engaged in hostilities, it is said to be at ...
- rest
- armistice
- conflict
- peace

Respuesta :

- definitely not conflict; as this would be a hostility!

-armistice means an interruption in fighting, but it does not mean an end of a war: so also not a good option

- I have never heard that a country could be "at rest"...

but I have heard of countries at peace, and this is the correct option!