No idea what primary research so i'm going to assume you mean primary source in which case it depends on the type of evidence, like if it's a personal account then that's a primary source but if it's someone telling of someone else's story it's not.
The answer is:
<span>People who settled in the cities atop mountains.
</span>-Apex
1) Russia, 2) China, 3) North Korea, etc.
When the Nazi's fled and the Russians (I believe) invaded was a huge turning point giving jews and all others captured, hope and freedom.
Leonardo Da Vinci represented the “Renaissance man” because he was interested in how things work. He was a painter, sculptor, musician, writer, engineer, architect, botanist, anatomist, and an inventor.
