Complex sentence: In Armenia, Yarrow started a street cleaning program and other irrigation projects which provided jobs to some 150,000 refugees; through the program, many of the refugees earned wages which helped them finance their daily activities independently.
Split into simpler sentences: In Armenia, Yarrow started a street cleaning program and other irrigation projects which provided jobs to some 150,000 refugees. Through the program, much of the refugees earned wages which helped them finance their daily activities independently.