Which country has Crux constellation on its flag?

Australians never call it Crux. We always call it the Southern Cross.

Player #22030069, I agree. Never heard of Crux and I'm an Aussie to. It's the Southern Cross.

Player #22030069, we can't fault the quiz masters for using the scientific name, just because we prefer to call it something else. They have to be fair to everyone.

Yep, I'm Australian and crux threw me.

knew it! thanks to Nat Geo Wild haha

TestyAlien3443, Lovely song.

The Southern Cross & The Southern Cross Flag, around these parts, is completely different from that explanation.

Crosby Stills & Nash "Southern Cross"