Portal:Germany/Anniversaries/June/June 18
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![Max Immelmann](http://upload.wikimedia.org/wikipedia/commons/thumb/8/85/Max_Immelmann.jpg/100px-Max_Immelmann.jpg)
- 1887 – Germany and Russia agree on the Reinsurance Treaty
- 1916 – Death of World War I ace Max Immelmann
- 1927 – Inauguration of the Nürburgring race track
- 1929 – Birth of sociologist Jürgen Habermas