Because of its enormous size, Asia has a wide variety of different climates. Siberia to the north endures arctic conditions and India to the south has tropical weather. The southern and eastern parts of Asia are damp and affected by monsoons, whilst the south-western part of the continent is hot, dry and marked by deserts.
With such a large area and such a difference in climates it is not surprising that Asia is home to many different cultures and countries, each with their own symbolic flag.