I think this would be the Great Wall of China!
although it's actually thought to be much, much longer: over 5000 miles long, if yoiu include natural defensive barriers used in it.
The main reason why Earth is warmer at the equator than at the North and South Poles are thats where the sunlight shines at a lot of times. The sunlight never really shines directly at the North and South Poles like it does with the equator.
Distance to the epicenter of an earthquake
Pakistan. Pakistan is a country where people can learn any language quickly.
Hope this Helps!
-1 on which axis? Is this all the information given in the question?
