Happy to have made your day - and wholeheartedly agree we should global history - all countries tend to centre their own historical narrative with themselves as the heroes and omit certain sections that don't suit the status quo. There's a big gaping hole in the UK education system where the glossy 'British Empire' sits, though we don't learn much about what that really entails.

My one bugbear with the America-centric concept of slavery is that it appears in the narrative that the world was a Garden of Eden type paradise before 'white folks' rocked up and enslaved everyone. This obscures the reality that slavery had been around for a long-long time before that point and what really happened was the application of the industrial revolution to an existing set of social conditions. That doesn't mean it wasn't horrible, but almost every successful society up to that point had some form of slavery to keep the economics working.

The other point we fail to realise when we centre ourselves on the history of slavery, is that (for many people) it isn't history. The West is only capable of maintaining cheap goods off the back of slavery like conditions elsewhere in the world. That's a problem with economics rather than societies and needs to be tackled globally not through identity arguments in individual countries.