@Alan
That needs to happen here too, we need to teach about Empire, BOTH the good and bad parts, the good being taking railways to the world, and our inventive and innovation history. The bad being slavery, subjugation and control of other people, the corruption in the British east india company, the partition of india, and even the creation of isreal from Palestine which was a British protectorate. Even in WWI citizens of other countries, even Africa, as they were seen as british subjects were expected and conscripted and conscripted for Empire, even though they were 1000s of miles away from the front line, if I understand this correctly this is what brought down the British Empire.
This has to be taught so that we never again end up with countries invading others and taking ownership, also teach about Spanish, French and other Empires. This then leads on to Slavery the slave trade and how people profited and gained power from this, sowed the seeds of what we have to day capitalism where a few rich people just tred on everyone else.
Now more than ever as we explore the solar system, so we do so differently and don't just claim a moon, planet or asteroid in the name of humanity and exploit it.