How did the development of the radio impact the realignment of global powers during the 1920s?

May 30, 2007 — Three revolutions have come via the airwaves. ... November 2, 1920: KDKA, the first commercial radio station in the United States, goes on ... April 3, 1973: Martin Cooper of Motorola makes the world's first cell phone call. ... Thanks to the amplifying power of the newly invented vacuum tubes, hams started ...

Explanation:

lines and shapes are a part of the visual elements which can be played with and used to create a mood or feeling in a composition.

some of the other elements include the pattern, color, tone and texture. all these elements serve together as the construction blocks which are used by the artists to create artwork.

lines are used to form drawings and different shapes are formed when these lines are used in certain lengths or angles. so the artist can play with these elements of art to create and express different moods, thus conveying different  meanings.

eurasia because it is europe and asia