Location in hemispheres
The equator is an imaginary line around the middle of Earth. North of it is the Northern Hemisphere, south of it is the Southern Hemisphere.
The prime meridian (0° longitude) passes through Greenwich. East of it, up to 180°, is the Eastern Hemisphere. West of it is the Western Hemisphere.
China and India both lie in the Northern and Eastern hemispheres. A place at 33°N, 105°E is north of the equator and east of the prime meridian, so it is in both.
Land and sea neighbours
A country can touch other countries on land (land neighbours) and can face oceans or seas (sea neighbours, meaning the waters it shares or faces).
China has 14 land neighbours and a long coast on seas of the Pacific Ocean. India has 7 land neighbours and is surrounded by the Arabian Sea, the Bay of Bengal and the Indian Ocean on three sides.
A coast helps trade by ships and fishing. Many land neighbours mean many roads and trade routes, and also more need for friendly cooperation.
Administrative divisions: breaking a big country into parts
An administrative division is a part of a country with its own local government. Usually there are levels:
- Country
- First level: provinces or states
- Next levels: districts or counties, then towns and villages
Dividing helps to run schools, roads, health care and elections close to the people.
34 provincial-level units and their codes
China's first level has 34 provincial-level units:
- 23 provinces
- 5 autonomous regions (where a minority group has a large share of people)
- 4 municipalities (big cities run directly by the national government: Beijing, Tianjin, Shanghai, Chongqing)
- 2 special administrative regions (Hong Kong and Macao)
23 + 5 + 4 + 2 = 34.
Each unit has a short abbreviation, usually one Chinese character. For example Beijing is 京, Shanghai is 沪 and Guangdong is 粤. Car number plates start with these characters.
India for comparison: 28 states and 8 union territories (total 36). Each state also has a short code, like MH for Maharashtra and KA for Karnataka.
Key formulas and definitions
- Hemisphere: N or S by latitude, E or W by longitude
- China: 23 provinces + 5 autonomous regions + 4 municipalities + 2 SARs = 34
- India: 28 states + 8 union territories = 36
- Levels: country, province or state, district or county, town or village
Worked examples
1. A place is at 20°S, 30°E. Name its hemispheres.
South of the equator means Southern. East of the prime meridian means Eastern. So Southern and Eastern.
2. Add up the 34 provincial-level units of China using the four kinds.
23 provinces + 5 autonomous regions + 4 municipalities + 2 special administrative regions = 34.
3. Our example country has 6 first-level units. Each splits into 4 smaller units. How many small units in all?
6 × 4 = 24 small units.
Common mistakes
- Mixing up hemispheres: latitude gives North or South, longitude gives East or West.
- Thinking sea neighbours are countries. They are waters; neighbouring countries across the sea are separate.
- Thinking every country divides its units in the same way. Names and numbers differ: provinces, states, regions, counties.
- Forgetting that municipalities and special regions are also provincial-level units.