Complex sentence: Alldeutscher Verband (German for "All German Union" or "Pangermanic League", 1891-1939) was a German far-right organization which promoted pangermanism and imperialism, created in 1891 in protest to the exchange of Heligoland for Zanzibar.
Split into simpler sentences: Alldeutscher Verband (German for "All German Union" or "Pangermanic League") was an German far-right organization which promoted German imperialism and pangermanism. It was created in 1891 in protest to the exchange of Heligoland for Zanzibar.