Was for decades the leading theorist of the Social Democratic Party of Germany (SPD) and the Second International
Text from Wikipedia, available under CC BY-SA 4.0.
- #wikipedia
- #event
Was for decades the leading theorist of the Social Democratic Party of Germany (SPD) and the Second International
Text from Wikipedia, available under CC BY-SA 4.0.
Captured 2026-08-17 from Wikipedia. The archived copy is preserved so this citation survives link rot.