Complex sentence: The Cherra Companyganj State Railway was conceptualized by Hubert Kench, the British Executive Engineer of Khasi and Jaintia Hills Division, as there was need to connect Shillong, capital of province to Calcutta, then the capital of British India by rail.
Split into simpler sentences: The Cherra Companyganj State Railway was conceptualized by Hubert Kench, the British Executive Engineer of Khasi and Jaintia Hills Division. As there was need to connect Shillong, capital of province to Calcutta, then the capital of British India by rail.