Alpheus Babcock developed the one-piece cast iron frame for piano.
<h3>What is a piano?</h3>
Piano is a musical instrument, having black and white notations of different tones. A person who plays a piano is known as a pianist. The structure of pianos has evolved over time.
The most important evolution in the history of pianos was made in 1825 when Alpheus Babcock introduced a one-piece cast iron frame for pianos.
Hence, option D holds true regarding the crucial development in the history of piano.
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Answer:
D. Shape
Explanation:
All of the other options you wouldn't really describe as enclosed spaces where lines meet, so I'd say the most reasonable answer is D, because when you think about it you realize if you do draw lines that meet somewhere you can call it a shape.
Hope this helps ^-^
Answer:
do you truly believe in God?
C I’m pretty sure Yeeyeee
The correct answer that would best complete the given statement above would be option A. Prairie houses at are irregular in plan, two stories high, which one-story wings. Prairie <span>style architecture evolved from the handcrafted, meticulous design and construction prevalent during the earliest years of the 20th century. Aside from the given characteristics above, it has also a low-pitched roof, strong horizontal lines and natural materials are used like stone and wood. Hope this helps.</span>
