Complex sentence: In the same year, Siad Barré banned all political parties with the exception of the Somali Revolutionary Socialist Party (SRSF), so the SODAF (a forerunner of the SSDF) was founded in exile in Rome.
Split into simpler sentences: In the same year, Barre banned all political parties with the exception of the Somali Revolutionary Socialist Party (SRSF). So the SODAF (a forerunner of the SSDF) was founded in exile in Rome.