Complex sentence: She returned to the east coast on several occasions to help with fleet problems in the Carribean and also took a cruise to Samoa, Australia, and New Zealand from 8 June to 26 September 1925 to show the U.S. flag in the southwestern Pacific.
Split into simpler sentences: She returned to the east coast from time and time again to help with fleet problems in the Carribean. The cruise was from 8 June--26 September 1925 to show the U.S. flag in the southwestern Pacific.