05-18-2011, 04:39 PM
cold weathers are easily manageable than hot weathers
and there is a higher correlation on the productivity of the country and its distance from the equator.
the farther the country is from tropic regions, the more advance the country is.
and there is a higher correlation on the productivity of the country and its distance from the equator.
the farther the country is from tropic regions, the more advance the country is.