Most countries were ruled by kings, queens, or priests.
You put this in the wrong category, but I will still help...
Number 1: 20 centimeters( just look at the graph)
Number 2: I am guessing 40 centimeters. I think you are calculating how long it took your bug to reach point B...
Hope this Helped!
Answer:
lack of education, decreasing death rates, and a lack of access to healthcare.
Explanation:
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Of these choices i'd say that the third option or "domestic fuels are always cheaper to acquire and renewable". I hope this helps :)