Most financial investments are examples of Human risk type of risks. Since, we humans invest in any kind of financial investments on our own risk expecting profits.
The frequency of a sound wave is determined by the amplitude of the wave. As amplitude of the wave is high the frequency of the wave will also be high.
The expansion of the rail networks led to better transport system for trading between many parts of the nation and the steel is the main component in making the rails and the locomotive itself resulting in the growth of the steel industry.