How do you make a spaghetti bolognaise?

Arguably Spaghetti Bolognese is explicitly not an Italian dish, it's two very similar culinary traditions which evolved slightly separately from each other in the US and UK, initially influenced by Italian immigrants but not specifically just those from Bologna as it's a mash-up of regional traditional from the north of Italy with that of the south, and then embraced and developed further by non-Italians to match what was available locally to produce effectively a whole new dish. Or two whole new dishes really, as the US variant is not the same as the UK version. But you won't find spagbol in Bologna, or at least not outside of a terrible tourist trap cashing in on it's reputation.