请写出有关Tailand的三个facts，请速回答，谢谢！

Thailand is a kingdom.

Thailand is an independent country that lies in the heart of Southeast Asia.

Thailand is the world's 51st-largest country in terms of total area.
Thailand's official language is Thai.

Thailand is one of the most devoutly Buddhist countries in the world.

The region known as Thailand has been inhabited by humans since the paleolithic period, about 10,000 years ago.

Thailand remains an active member of the regional Association of South-East Asian Nations.

Thailand is known for their rice.
Tourism is a vitally important industry in thailand.
The political situation in Thailand is not stable.