- As a source of foreign currency.
- Reduce the problem of lack of balance of payments between countries.
- Help build careers and employment.
- Contribute to the income distribution.
- Helped stimulate economic production.
Social and cultural
- Help raise the standard of living of the local people.
- Help create prosperity for the society.
- The conservation and restoration of cultural and environmental.
- Help bring the benefits of education.
- Reduce congestion in the capital.
- A navigational aid was worthless local resources to create value.
Political
- Helping to build peace and harmony.
- Help promote stability and good image for the country.