More information about the history/development of the concept of Lebensraum

[Futurist]

Frankly, I am wondering if there is any information about the history/development of the concept of Lebensraum which the Wikipedia article about Lebensraum doesn't mention/talk about:

https://en.wikipedia.org/wiki/Lebensraum

Indeed, any thoughts on this?

[Futurist]

@Michael Mills (and other people): Any thoughts on this question of mine?

[wm]

They say there Lebensraum a form of settler colonialism, and settler colonialism provides lots of examples of this kind of colonization.

[Futurist]

They say there Lebensraum a form of settler colonialism, and settler colonialism provides lots of examples of this kind of colonization.

Thanks for sharing this link! That said, though, I would like more information about the development of the concept of Lebensraum itself rather than about the development of the concept of settler colonialism in general.