Answer:
sorry if this is wrong but i would say C
Explanation:
The answer that you're seeking is, "Trains from different rail lines could use each other’s tracks." The standardization of rails allowed trains to use eachothers tracks and increase speed and efficieny in deliveries. Hope I helped!
Answer:
Charles X was deposed and replaced by King Louis-Philippe in the July Revolution. It is traditionally regarded as a rising of the bourgeoisie against the absolute monarchy of the Bourbons. ... The Revolution broke out on July 27, 1830. Throughout the day, Paris grew quiet as the milling crowds grew larger