Complex sentence: The Romanian Revolution started in the city of Timisoara and soon spread throughout the country, becoming the only one of these revolutions that forcibly overthrew a Communist government and executed the country's head of state.
Split into simpler sentences: The Romanian Revolution started in the city of Timisoara and soon spread throughout the country. It was the only one of these revolutions that forcibly overthrew a Communist government and executed the country's head of state.