Complex sentence: There are 13 known surviving journals of the First Fleet which left England on 13 May 1787, arriving in Botany Bay between 18 and 20 January 1788, and established a penal colony which became Sydney, Australia.
Split into simpler sentences: There are 13 known surviving journals of the First Fleet. The Fleet left England on 13 May 1787, arriving in Botany Bay between 18 and 20 January 1788, and established a penal colony which became Sydney, Australia.