Thailand is a founding member of ASEAN, a medium power in international affairs, and it has a very high Human Development Index score. Its economy is the second largest in Southeast Asia, the 24th largest globally by purchasing power parity, and it is ranked 85th in terms of nominal GDP per capita.
Thai culture became more and more contemporary and Westernised throughout this time. The rural population moved to burgeon cities in search of employment, resulting in rapid urbanisation. The southwest and northeast monsoons, which have a seasonal character, have an impact on Thailand's climate. An area with ecologically significant or uniquely beautiful natural resources, or with particularly significant flora and fauna, is classified as a national park in Thailand.
As per the World Travel and Tourism Council, Thailand is the sixth most popular location for inbound medical tourism spending, with over 2.5 million visitors in 2018. It is also the top nation in Asia. Thailand's highway network spans 390,000 kilometres (240,000 miles). Over 462,133 roadways and 37 million registered vehicles—20 million of which are motorbikes—were present in Thailand as of 2017. Roughly one-third of the oil used in Thailand is produced there. In Southeast Asia, it is the second-biggest importer of oil. In ASEAN, Thailand is the third most popular country for study abroad travel. Between 1999 and 2012, there were 20,309 overseas degree students in Thailand, a 9.7-fold increase from 1,882 students. Thailand is ranked first in Asia and sixth in the globe in the 2019 Global Health Security Index.