The answer is: "notch" .
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Earth is closest to the sun at a point called perigee.
The point at which the Earth is farthest from the sun is called the apogee, just in case you needed to know that one too.
1. The western and Eastern cities developed at a different period. Eastern cities developed in the 1700s and 1800s while the western cities developed in 1900s, which cause some difference in culture.
2. The next one would be the economic difference between the two. Since western cities are developed during the peak of the industrial revolution, the western cities tend to have stronger economic power compared to the eastern cities.
3. The next one would be the structure. To cater the industrialized worker, western cities tend to have more single-family homes rather than lawns and a center of internet media and technology. The eastern cities, on the other hand, consist of shared housings and mixed neighborhood and would often used for factories due to its wide area.
The development of the population policies in the 20th century were due too multiple factors, the most important of which were:
- Fertility rates were starting to lower down, especially in the ''western world'' in the second half of the 20th century.
- Increased demand for labor force.
- The World Wars, especially the second one caused huge migration movements.
- Millions of people from less developed countries were trying to migrate to more developed countries in search of a better life.
