Heads up to anyone that might not know, but you shouldn’t say “the Congo”, because referring to it that was is a remnant of colonialism. Instead, just say Congo. E.g. “there’s a war in Congo”.

I realise that I’m being peak buzzkill politically correct leftie here, but I only learned this relatively recently, and I want to help out others like me. It still sounds weird to me to say “Congo” rather than “the Congo”, but that’s part of why it feels important to make the effort to change

The official name of the country is “Republic of the Congo.” It is fine to shorten that to “The Congo.”