Complex sentence: Edna started building a hospital in Mogadishu in the mid 1980s, however, before it was completed, the Somali Civil War began, and she was forced to leave the country.
Split into simpler sentences: Edna started building a hospital in Mogadishu in the mid- 1980s. However, before it was completed, the Somali Civil War began, and she was forced to leave the country.