Amount of sunlight, distance from equator, and height above sea level
The length of daylight and nighttime are of equal length on an equinox because the center of the sun spends a roughly equal amount of time above and below the horizon at every location on the Earth.
South Africa= around 55,000,000 of total population (based on 2015 data)
Nigeria= around <span>185,000,000 of total population (2015 data)
Angola = around </span><span>25,000,000 of total population (2014 data)
Congo= around </span><span>82,000,000 of total population (2015 data)
Given that there's not an high </span>population growth or <span>birth rate or something like that, I'd say Nigeria </span>
South Carolina is boarded to the east of the Atlantic Ocean