The Himalayas were formed by crumpling of plate edges in a convergent zone.
The Statue were made from Volcanic Ash from the Rano Raraku Volcano
But nobody knows who made them...
Hope this helps!!
LEDC means that a country is a developing country (as opposed to a developed country). This distinction is connected to the Brandt line which divides the world into developed and developing country, and India is south of this line (=LEDC, less developed country). Some reasons for this is malnutrition, high child mortality and short life expectancy.
Basalt is not a type of sedimentary rock
