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<span>'Domino theory' China turned Communist in 1949 and Truman feared that the next 'domino' would be Japan.
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<span>None of the paintings are a primary source. They are both secondary sources.</span>
The type of wave which needs a medium to travel are sound waves because they travel by oscillating electromagnetic fields
<h3>What is a Sound Wave?</h3>
This refers to the waves of refraction which is propagated by a plastic medium.
With this in mind, we can see that mechanical waves are the types of wave that needs a medium for propagation and a sound wave is an example of a mechanical wave because it travels by oscillating electromagnetic fields.
Read more about mechanical waves here:
brainly.com/question/9242091
Member's received illegal kickbacks. Those kickbacks from oil companies made some members rich men and the scandal broke etc
Sweep into whashington,,,,,, d............