<span>The Indus River valley. On it's banks there were settlements dating as far back as the 4th century BC, making them comparable in age to the ancient city states of Mesopotamia in modern day Iraq.</span>
This is due to the movement of the Earth: not the Sun is moving, but Earth is moving (this is what was discussed in the Heliocentic/Geocentric models in middle ages);
the Earth rotates counter-clockwise (as seen from the North Pole) which means that the points on the Earth move relative to the Sun.
Parliamentary republicUnitary statePresidential system<span>Republic
</span>Parliamentary systemConstitutional republic<span />
Tourism is the largest industry in the world