Thailand, although rich in rubber and in mineral resources, was never colonized by Europeans and has existed as a unified monarchy since 1350. The climate is tropical with long hours of sunshine and high humidity. The geographic and climatic conditions make the country suitable for the cultivation of a wide range of tropical and semi-tropical agricultural crops. The most important ethnic minority are Chinese. Other minority groups include Malays, Cambodians, Indians, non-Thai hill tribes, and some Vietnamese.
Immigration is controlled by a quota system.
The symbol of a white elephant on a red background was chosen because white elephants are considered very auspicious by Thais. King Rama II was known as the 'White Elephant King' as he had three of these noble animals in his possession during his reign. The flag is raised daily at 8.00 am and lowered at 6.00 pm at all official buildings, public places, large private enterprises, and schools, usually to the accompaniment of the Thai National Anthem. The flag is also flown nationwide on national holidays. Many ministries and departments have incorporated the Garuda into their insignias.