Answer:
A mixed economy combines elements of free-market and command economies.
Explanation:
I believe this is true (parallel to the equator)
Answer:
The khan was the ruler of the Mongolian Empire. That's why the rulers of Mongolia all had khan after their name (Genghis Khan, Kublai Khan etc.). A farmer would've been a "fyermyer", a priest would've been a "tackhilch" and a soldier would've been a "tsereg". The actually way to say king would've been "khaan" (pronounced xan) not khan.
C. The increase in the use of coal as a source of heat and energy