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!
Together, these two things began to re-civilize Europe. When the Western Roman Empire fell in 476 C.E., a state of chaos encompassed Western Europe for many centuries. Essentially, the people of Western Europe needed some form of a political system to defend themselves. Thus, feudalism developed.
Answer: c and d
Explanation: idfk I have just been doing English long enough
Both Hinduism and Buddhism dod not support the caste system, didn't revered women and didn;t become increasingly popular in India.
The answer is E) None of the above.