Which development  most  contributed to the start of the second industrial revolution in the late 1800s?    a. the development of new agricultural tools    b. the invention of water-powered machines    c. the availability of inexpensive steel    d. the collapse of the railroad industry

c.

Explanation:

the avaliability of inexpensive steel,  the most prominent, thus with the first industrial Revolution, was in relation to inventions and discoveries, this time what boosted was undoubtedly the oil, the combustion engine, the use of steel and the use of water force in the generation of electricity , with the creation of hydroelectric plants.

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richard milhous nixon (january 9, 1913 – april 22, 1994) was the 37th president of the united states, serving from 1969 to 1974, when he became the only president to resign (quit). he is also known for corruption and the watergate scandal which resulted in the public losing trust in him and his resignation.