Complex sentence: This was a time when the infant colony was commencing large railway construction projects, in comparison with the end of the'railway mania' in Britain and the decline in railway construction, which saw many of the new profession of civil engineer unemployed.
Split into simpler sentences: This was a time when the infant colony was commencing large railway construction projects, in comparison with the end of the'railway mania' in Britain. The decline in railway construction saw many of the new profession of civil engineer unemployed.