Currently there are about seven billion people living on Earth. Since 72% of the Earth’s surface is covered by water, we might soon run out of space to live on. The Earth’s carrying capacity is estimated anywhere between 2 billion to 40 billion people [source: McConeghy]. This is also supported by the Malthus Theory of Population, whereby he says that the geometric growth of the human population will overtake the arithmetic growth of natural resources. However, the Earth’s population isn’t evenly distributed. We can calculate this by finding the density of the population in a square kilometre.
Number of people living in an areaSize of area(km2)=Population Density(km²)
Most of Asia is densely populated, i.e. India, China, Bangladesh, Philippines, and the more sparsely populated areas would include Russia, Australia, South America, Canada and Alaska. The density of a population in a certain area is affected by physical factors (climate, relief and soils) and economic factors (job opportunity, communication and accessibility). Most of the sparsely populated areas usually have either an extreme climate or extreme physical factors. Civilisation always started from rivers or water sources. For example, The Indus Valley Civilisation was a Bronze Age Civilisation (3300–1300 BC) that was located in modern-day Pakistan and Punjab. The Indus Valley is one of the world's earliest urban civilizations, along with its contemporaries, Mesopotamia and Ancient Egypt that were all located along rivers.
Mumbai, India vs. Shanghai ,China
Since India and China are one of the