Here is what Germany did for the world:
We invented Jet-Engines, Rockets, Nuclear Fission and discovered a bunch of cool stuff, like how Bacteria works and lives and that they make us sick.
Also we invented industrialized genocide and how to look cool in black uniforms.
In all seriousness:
We did facism for the world. And we did it so well that the result was so horrible that no other major nation ever had to try it again. Great contribution, if you ask me.
We invented Jet-Engines, Rockets, Nuclear Fission and discovered a bunch of cool stuff, like how Bacteria works and lives and that they make us sick.
Also we invented industrialized genocide and how to look cool in black uniforms.
In all seriousness:
We did facism for the world. And we did it so well that the result was so horrible that no other major nation ever had to try it again. Great contribution, if you ask me.