Answer: Petroleum, Electricity and Steel
Explanation: The second industrial revolution is a period between the late 19th to the early 20th century which is characterized by massive growth and expansion of industrialization. The second industrial revolution is also known as the technological revolution most notable for steel production, expansion in electrification which was previously limited to very few cities and development of Petroleum and gas supply.
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<span>Oda Nobunaga consolidated Japan.</span>
Progressives sought to break the power of political bosses by reforming the election process. They used direct primary to take the power of choosing candidates away from political machines. Then they pushed for the 17th amendment to give voters the power to elect their senators directly. Finally, progressives urged states to adopt initiative, referendum, and recall.
