Frank Lloyd Wright proved that his columns would hold 60 tons.
Answer:
The piano was invented by Bartolomeo Cristofori (1655-1731) of Italy. Cristofori was unsatisfied by the lack of control that musicians had over the volume level of the harpsichord. He is credited for switching out the plucking mechanism with a hammer to create the modern piano in around the year 1700.
<span>The correct answer is letter D. Pigment is the "liquid substance used in paint and other media to bind particles of pigment together." It is also considered a material or an object that changes its color because of wavelength-selective absorption. You may observe it that it reflects or transmits color as a result of the absorption.</span>
