Russian Federation is the official name of Russia and what it is called now.
Answer:
A solar eclipse occurs when the moon gets between Earth and the sun, and the moon casts a shadow over Earth. A solar eclipse can only take place at the phase of new moon, when the moon passes directly between the sun and Earth and its shadows fall upon Earth's surface.
Explanation:
hope this helps if not let me know have a blessed day
This would be the north as back during the reconstruction era, the north (Tom Watson's group) wanted to be more efficient and industrialized.
Reference: Georgia Studies Unit 6 notes

The Correct choice is : C. <u>Solids</u>
Sound waves need a medium to propagate, and the most suitable medium for that is solids, where it travel the fastest or with greatest efficiency.