The Golden Age. Generally speaking, historians and technicians refer to the time between post WWI and the Great Depression as the "Golden Age" of piano building, because by and large, many people had come to the conclusion that the design and general conception of the instrument was 'complete', and that there was very little room for further improvements.
Hope this is right:)
The Second Industrial Revolution was a period of rapid industrial development, primarily in Britain, Germany, and the United States, but also in France, the Low Countries, Italy, and Japan. It was characterized by the build out of railroads, large-scale iron and steel<span> production, widespread use of machinery in manufacturing, greatly increased use of steam power, </span><span> use of petroleum and the beginning of </span><span>electrification. However, d</span>uring the second industrial revolution access to raw materials has decreased.
The answer to your question is A. I hope this is the answer that you were looking for.
Some people lost hope in their religion and formed new ides and started following logic. This cultural revolution spread around the world and people formed new beliefs. It influenced many legal codes and governmental structures that are still in place today.
