Complex sentence: In early 1979 the Organization of American States supervised negotiations between the FSLN and the government however these broke down when it became clear that the Somoza regime had no intention of allowing for democratic elections to take place.
Split into simpler sentences: In early 1979 the Organization of American States supervised negotiations between the FSLN and the government. However, these broke down when it became clear that the Somoza regime had no intention of allowing for democratic elections to take place.