Complex sentence: The capital invested in Scottish railways was £26.6 million in 1859 and by 1900 it had reached £166.1 million and its floatation was a major factor in the formation of the Scottish stock exchanges and the rise of share holding in Scotland.
Split into simpler sentences: The capital invested in Scottish railways was £26.6 million in 1859 and by 1900 it had reached £166.1 million. The floatation of railway companies was a major factor in the formation of the Scottish stock exchanges and the rise of share holding in Scotland.